| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Dec 31, 2012 | 20.87 | 20.87 | 20.87 | 0 | -0.04(-0.19%) | |
| Dec 28, 2012 | 20.82 | 21.05 | 20.82 | 20.91 | 79,484 | -0.09(-0.43%) |
| Dec 27, 2012 | 20.90 | 21.15 | 20.79 | 21.00 | 30,927 | +0.10(+0.48%) |
| Dec 24, 2012 | 20.90 | 20.90 | 20.90 | 0 | -0.02(-0.10%) | |
| Dec 21, 2012 | 20.71 | 21.21 | 20.71 | 20.92 | 74,471 | +0.11(+0.53%) |
| Dec 20, 2012 | 21.25 | 21.25 | 20.67 | 20.81 | 120,362 | -0.57(-2.67%) |
| Dec 19, 2012 | 21.49 | 21.58 | 21.29 | 21.38 | 43,970 | -0.16(-0.74%) |
| Dec 18, 2012 | 22.08 | 22.08 | 21.49 | 21.54 | 201,773 | -0.33(-1.51%) |
| Dec 17, 2012 | 21.80 | 21.89 | 21.80 | 21.87 | 60,272 | -0.01(-0.05%) |
| Dec 14, 2012 | 22.00 | 22.04 | 21.88 | 21.88 | 44,298 | -0.09(-0.41%) |
| Dec 13, 2012 | 22.00 | 22.08 | 21.91 | 21.97 | 60,286 | -0.48(-2.14%) |
| Dec 12, 2012 | 22.48 | 22.62 | 22.25 | 22.45 | 70,872 | +0.24(+1.08%) |
| Dec 11, 2012 | 22.34 | 22.34 | 22.14 | 22.21 | 32,894 | -0.13(-0.58%) |
| Dec 10, 2012 | 22.62 | 22.64 | 22.33 | 22.34 | 38,685 | -0.28(-1.24%) |
| Dec 07, 2012 | 22.36 | 22.63 | 22.26 | 22.62 | 55,177 | +0.37(+1.66%) |
| Dec 06, 2012 | 22.11 | 22.41 | 22.11 | 22.25 | 40,845 | +0.07(+0.32%) |
| Dec 05, 2012 | 22.78 | 22.78 | 22.18 | 22.18 | 75,288 | -0.30(-1.33%) |
| Dec 04, 2012 | 22.60 | 22.60 | 22.34 | 22.48 | 68,047 | -0.29(-1.27%) |
| Nov 30, 2012 | 23.01 | 23.11 | 22.67 | 22.77 | 44,743 | -0.32(-1.39%) |
| Nov 29, 2012 | 23.15 | 23.35 | 23.05 | 23.09 | 65,015 | +0.19(+0.83%) |
| Nov 28, 2012 | 22.72 | 22.95 | 22.54 | 22.90 | 44,239 | -0.25(-1.08%) |
| Nov 27, 2012 | 23.11 | 23.15 | 22.91 | 23.15 | 33,524 | +0.03(+0.13%) |
| Nov 26, 2012 | 23.18 | 23.27 | 23.08 | 23.12 | 53,884 | -0.13(-0.56%) |
| Nov 24, 2012 | 22.91 | 23.31 | 22.86 | 23.25 | 58,554 | +0.00(+0.00%) |
| Nov 23, 2012 | 22.91 | 23.31 | 22.86 | 23.25 | 58,554 | +0.61(+2.69%) |
| Nov 22, 2012 | 23.00 | 23.00 | 22.61 | 22.64 | 11,508 | -0.21(-0.92%) |
| Nov 21, 2012 | 22.70 | 22.87 | 22.61 | 22.85 | 21,539 | +0.18(+0.79%) |
| Nov 20, 2012 | 22.70 | 22.79 | 22.58 | 22.67 | 42,643 | -0.11(-0.48%) |
| Nov 19, 2012 | 22.75 | 22.87 | 22.63 | 22.78 | 39,413 | +0.41(+1.83%) |
| Nov 16, 2012 | 22.36 | 22.40 | 22.25 | 22.37 | 42,694 | +0.02(+0.09%) |
| Nov 15, 2012 | 22.69 | 22.70 | 22.32 | 22.35 | 58,274 | -0.36(-1.59%) |
| Nov 14, 2012 | 22.74 | 22.84 | 22.62 | 22.71 | 40,260 | +0.05(+0.22%) |
| Nov 13, 2012 | 22.70 | 22.92 | 22.56 | 22.66 | 26,466 | -0.04(-0.18%) |
| Nov 12, 2012 | 22.95 | 22.95 | 22.68 | 22.70 | 47,076 | -0.06(-0.26%) |
| Nov 09, 2012 | 23.03 | 23.06 | 22.76 | 22.76 | 45,835 | -0.11(-0.48%) |
| Nov 08, 2012 | 22.42 | 22.98 | 22.40 | 22.87 | 82,558 | +0.53(+2.37%) |
| Nov 07, 2012 | 22.19 | 22.44 | 22.04 | 22.34 | 73,136 | +0.24(+1.09%) |
| Nov 06, 2012 | 21.93 | 22.27 | 21.79 | 22.10 | 50,269 | +0.25(+1.14%) |
| Nov 05, 2012 | 21.83 | 21.87 | 21.63 | 21.85 | 44,811 | +0.24(+1.11%) |
| Nov 02, 2012 | 21.73 | 21.76 | 21.35 | 21.61 | 139,736 | -0.32(-1.46%) |
| Nov 01, 2012 | 22.18 | 22.22 | 21.91 | 21.93 | 44,569 | -0.17(-0.77%) |
| Oct 31, 2012 | 22.30 | 22.30 | 22.05 | 22.10 | 79,371 | +0.10(+0.45%) |
| Oct 30, 2012 | 22.10 | 22.15 | 21.80 | 22.00 | 31,144 | -0.07(-0.32%) |
| Oct 29, 2012 | 22.13 | 22.15 | 21.89 | 22.07 | 27,497 | -0.08(-0.36%) |
| Oct 26, 2012 | 22.19 | 22.28 | 22.11 | 22.15 | 36,901 | -0.02(-0.09%) |
| Oct 25, 2012 | 21.95 | 22.21 | 21.95 | 22.17 | 99,451 | +0.37(+1.70%) |
| Oct 24, 2012 | 21.94 | 21.94 | 21.74 | 21.80 | 32,914 | -0.01(-0.05%) |
| Oct 23, 2012 | 21.98 | 22.08 | 21.80 | 21.81 | 78,573 | -0.29(-1.31%) |
| Oct 19, 2012 | 22.10 | 22.22 | 21.99 | 22.10 | 58,065 | -0.01(-0.05%) |
| Oct 18, 2012 | 22.25 | 22.33 | 22.11 | 22.11 | 40,302 | -0.17(-0.76%) |
| Oct 17, 2012 | 22.56 | 22.56 | 22.27 | 22.28 | 87,314 | -0.20(-0.89%) |
| Oct 16, 2012 | 22.48 | 22.55 | 22.46 | 22.48 | 33,675 | +0.27(+1.22%) |
| Oct 15, 2012 | 22.40 | 22.40 | 22.13 | 22.21 | 82,106 | -0.36(-1.60%) |
| Oct 12, 2012 | 22.95 | 22.95 | 22.47 | 22.57 | 68,350 | -0.34(-1.48%) |
| Oct 11, 2012 | 23.07 | 23.13 | 22.90 | 22.91 | 25,295 | -0.09(-0.39%) |
| Oct 10, 2012 | 23.00 | 23.08 | 22.89 | 23.00 | 29,239 | +0.03(+0.13%) |
| Oct 09, 2012 | 23.19 | 23.20 | 22.96 | 22.97 | 67,867 | -0.40(-1.71%) |
| Oct 05, 2012 | 23.37 | 23.37 | 23.37 | 0 | -0.17(-0.72%) | |
| Oct 04, 2012 | 23.67 | 23.67 | 23.45 | 23.54 | 46,521 | -0.08(-0.34%) |
| Oct 03, 2012 | 23.57 | 23.70 | 23.54 | 23.62 | 58,527 | +0.09(+0.38%) |
| Oct 02, 2012 | 23.63 | 23.65 | 23.48 | 23.53 | 39,644 | -0.04(-0.17%) |
| Oct 01, 2012 | 23.73 | 23.78 | 23.32 | 23.57 | 68,884 | +0.11(+0.47%) |
| Sep 28, 2012 | 23.44 | 23.50 | 23.30 | 23.46 | 56,914 | +0.02(+0.09%) |
| Sep 27, 2012 | 23.17 | 23.46 | 23.17 | 23.44 | 65,140 | +0.42(+1.82%) |
| Sep 26, 2012 | 22.81 | 23.09 | 22.68 | 23.02 | 69,098 | +0.12(+0.52%) |
| Sep 25, 2012 | 23.15 | 23.15 | 22.82 | 22.90 | 73,040 | -0.06(-0.26%) |
| Sep 24, 2012 | 23.05 | 23.12 | 22.92 | 22.96 | 52,306 | -0.23(-0.99%) |
| Sep 21, 2012 | 23.19 | 23.36 | 23.03 | 23.19 | 72,911 | +0.21(+0.91%) |
| Sep 20, 2012 | 23.08 | 23.10 | 22.89 | 22.98 | 70,867 | -0.08(-0.35%) |
| Sep 19, 2012 | 23.30 | 23.30 | 23.03 | 23.06 | 55,582 | -0.04(-0.17%) |
| Sep 18, 2012 | 22.93 | 23.32 | 22.93 | 23.10 | 87,756 | +0.28(+1.23%) |
| Sep 17, 2012 | 23.17 | 23.25 | 22.80 | 22.82 | 80,895 | -0.31(-1.34%) |
| Sep 14, 2012 | 22.99 | 23.16 | 22.93 | 23.13 | 113,701 | +0.19(+0.83%) |
| Sep 13, 2012 | 22.39 | 23.05 | 22.17 | 22.94 | 110,882 | +0.50(+2.23%) |
| Sep 12, 2012 | 22.49 | 22.59 | 22.13 | 22.44 | 76,074 | +0.09(+0.40%) |
| Sep 11, 2012 | 22.37 | 22.46 | 22.27 | 22.35 | 60,124 | +0.07(+0.31%) |
| Sep 10, 2012 | 22.58 | 22.63 | 22.27 | 22.28 | 57,895 | -0.37(-1.63%) |
| Sep 07, 2012 | 22.34 | 22.75 | 22.31 | 22.65 | 90,473 | +0.63(+2.86%) |
| Sep 06, 2012 | 22.15 | 22.23 | 22.02 | 22.02 | 57,310 | -0.08(-0.36%) |
| Sep 05, 2012 | 22.19 | 22.20 | 22.04 | 22.10 | 53,844 | +0.05(+0.23%) |
| Sep 04, 2012 | 22.09 | 22.10 | 21.92 | 22.05 | 82,258 | +0.17(+0.78%) |
| Aug 31, 2012 | 21.88 | 21.88 | 21.88 | 0 | +0.70(+3.31%) | |
| Aug 30, 2012 | 21.24 | 21.42 | 21.11 | 21.18 | 41,898 | +0.02(+0.09%) |
| Aug 29, 2012 | 21.38 | 21.38 | 21.12 | 21.16 | 41,075 | -0.28(-1.31%) |
| Aug 27, 2012 | 21.25 | 21.57 | 21.25 | 21.44 | 42,209 | +0.19(+0.89%) |
| Aug 24, 2012 | 21.21 | 21.26 | 21.10 | 21.25 | 47,934 | +0.03(+0.14%) |
| Aug 23, 2012 | 21.10 | 21.24 | 20.94 | 21.22 | 102,996 | +0.50(+2.41%) |
| Aug 22, 2012 | 20.43 | 20.72 | 20.35 | 20.72 | 42,077 | +0.46(+2.27%) |
| Aug 21, 2012 | 20.20 | 20.44 | 20.18 | 20.26 | 76,145 | +0.26(+1.30%) |
| Aug 20, 2012 | 19.79 | 20.02 | 19.78 | 20.00 | 30,437 | +0.27(+1.37%) |
| Aug 17, 2012 | 20.05 | 20.05 | 19.73 | 19.73 | 122,175 | -0.20(-1.00%) |
| Aug 16, 2012 | 19.84 | 20.03 | 19.82 | 19.93 | 60,596 | +0.09(+0.45%) |
| Aug 15, 2012 | 19.90 | 19.95 | 19.77 | 19.84 | 20,229 | -0.02(-0.10%) |
| Aug 14, 2012 | 19.80 | 19.93 | 19.80 | 19.86 | 23,972 | -0.02(-0.10%) |
| Aug 13, 2012 | 20.13 | 20.13 | 19.88 | 19.88 | 18,355 | -0.14(-0.70%) |
| Aug 11, 2012 | 20.09 | 20.09 | 19.98 | 20.02 | 61,560 | +0.00(+0.00%) |
| Aug 10, 2012 | 20.09 | 20.09 | 19.98 | 20.02 | 61,560 | -0.01(-0.05%) |
| Aug 09, 2012 | 20.14 | 20.14 | 20.00 | 20.03 | 37,041 | -0.11(-0.55%) |
| Aug 08, 2012 | 20.15 | 20.16 | 20.08 | 20.14 | 21,587 | +0.01(+0.05%) |
| Aug 07, 2012 | 20.20 | 20.20 | 20.10 | 20.13 | 16,809 | +0.08(+0.40%) |
| Aug 03, 2012 | 20.05 | 20.05 | 20.05 | 0 | +0.16(+0.80%) | |
| Aug 02, 2012 | 19.92 | 19.92 | 19.82 | 19.89 | 26,258 | -0.08(-0.40%) |
| Aug 01, 2012 | 19.87 | 20.02 | 19.79 | 19.97 | 52,692 | -0.19(-0.94%) |
| Jul 31, 2012 | 20.35 | 20.35 | 20.14 | 20.16 | 34,178 | -0.12(-0.59%) |
| Jul 30, 2012 | 20.28 | 20.32 | 20.14 | 20.28 | 40,630 | -0.01(-0.05%) |
| Jul 27, 2012 | 20.37 | 20.37 | 20.18 | 20.29 | 41,810 | +0.06(+0.30%) |
| Jul 26, 2012 | 20.07 | 20.24 | 20.03 | 20.23 | 50,213 | +0.21(+1.05%) |
| Jul 25, 2012 | 19.85 | 20.08 | 19.79 | 20.02 | 40,683 | +0.38(+1.93%) |
| Jul 24, 2012 | 19.57 | 19.65 | 19.52 | 19.64 | 24,132 | +0.10(+0.51%) |
| Jul 23, 2012 | 19.54 | 19.61 | 19.52 | 19.54 | 37,779 | -0.05(-0.26%) |
| Jul 20, 2012 | 19.50 | 19.62 | 19.49 | 19.59 | 60,828 | +0.10(+0.51%) |
| Jul 19, 2012 | 19.68 | 19.74 | 19.48 | 19.49 | 52,812 | -0.13(-0.66%) |
| Jul 18, 2012 | 19.56 | 19.64 | 19.53 | 19.62 | 35,442 | -0.03(-0.15%) |
| Jul 17, 2012 | 19.65 | 19.78 | 19.51 | 19.65 | 27,267 | -0.09(-0.46%) |
| Jul 16, 2012 | 19.79 | 19.83 | 19.73 | 19.74 | 18,009 | -0.02(-0.10%) |
| Jul 13, 2012 | 19.85 | 19.95 | 19.75 | 19.76 | 72,478 | +0.06(+0.30%) |
| Jul 12, 2012 | 19.65 | 19.77 | 19.53 | 19.70 | 57,666 | -0.07(-0.35%) |
| Jul 11, 2012 | 19.86 | 19.93 | 19.71 | 19.77 | 42,517 | -0.04(-0.20%) |
| Jul 10, 2012 | 20.14 | 20.15 | 19.76 | 19.81 | 31,231 | -0.29(-1.44%) |
| Jul 09, 2012 | 20.02 | 20.19 | 19.96 | 20.10 | 29,733 | +0.15(+0.75%) |
| Jul 06, 2012 | 20.00 | 20.07 | 19.89 | 19.95 | 52,818 | -0.28(-1.38%) |
| Jul 05, 2012 | 20.09 | 20.30 | 20.03 | 20.23 | 39,151 | -0.45(-2.18%) |
| Jul 04, 2012 | 20.40 | 20.88 | 20.33 | 20.68 | 10,851 | +0.32(+1.57%) |
| Jul 03, 2012 | 20.30 | 20.48 | 20.27 | 20.36 | 39,144 | +0.20(+0.99%) |
| Jun 29, 2012 | 20.16 | 20.16 | 20.16 | 0 | +0.31(+1.56%) | |
| Jun 28, 2012 | 19.97 | 19.97 | 19.65 | 19.85 | 50,193 | -0.12(-0.60%) |
| Jun 27, 2012 | 20.12 | 20.18 | 19.93 | 19.97 | 28,592 | -0.05(-0.25%) |
| Jun 26, 2012 | 20.22 | 20.25 | 20.01 | 20.02 | 18,062 | -0.35(-1.72%) |
| Jun 25, 2012 | 20.00 | 20.43 | 20.00 | 20.37 | 52,693 | +0.35(+1.75%) |
| Jun 22, 2012 | 19.93 | 20.02 | 19.85 | 20.02 | 33,058 | -0.04(-0.20%) |
| Jun 21, 2012 | 20.30 | 20.37 | 19.95 | 20.06 | 114,711 | -0.54(-2.62%) |
| Jun 20, 2012 | 20.56 | 20.77 | 20.45 | 20.60 | 68,605 | -0.13(-0.63%) |
| Jun 19, 2012 | 20.94 | 20.94 | 20.69 | 20.73 | 51,332 | -0.21(-1.00%) |
| Jun 18, 2012 | 20.96 | 21.12 | 20.88 | 20.94 | 32,986 | -0.06(-0.29%) |
| Jun 15, 2012 | 21.22 | 21.22 | 21.00 | 21.00 | 62,807 | +0.01(+0.05%) |
| Jun 14, 2012 | 21.20 | 21.20 | 20.85 | 20.99 | 26,947 | -0.13(-0.62%) |
| Jun 13, 2012 | 21.20 | 21.25 | 21.06 | 21.12 | 25,781 | +0.02(+0.09%) |
| Jun 12, 2012 | 20.99 | 21.13 | 20.97 | 21.10 | 30,361 | +0.13(+0.62%) |
| Jun 11, 2012 | 21.02 | 21.06 | 20.69 | 20.97 | 37,653 | +0.04(+0.19%) |
| Jun 08, 2012 | 20.71 | 21.03 | 20.71 | 20.93 | 39,083 | -0.05(-0.24%) |
| Jun 07, 2012 | 21.50 | 21.50 | 20.61 | 20.98 | 53,192 | -0.48(-2.24%) |
| Jun 06, 2012 | 21.20 | 21.69 | 21.20 | 21.46 | 232,493 | +0.57(+2.73%) |
| Jun 05, 2012 | 20.71 | 20.89 | 20.66 | 20.89 | 79,821 | +0.13(+0.63%) |
| Jun 04, 2012 | 20.68 | 20.83 | 20.55 | 20.76 | 97,694 | +0.07(+0.34%) |
| Jun 02, 2012 | 19.97 | 20.78 | 19.97 | 20.69 | 217,674 | +0.00(+0.00%) |
| Jun 01, 2012 | 19.97 | 20.78 | 19.97 | 20.69 | 217,674 | +1.21(+6.21%) |
| May 31, 2012 | 19.61 | 19.67 | 19.42 | 19.48 | 71,333 | -0.04(-0.20%) |
| May 30, 2012 | 19.19 | 19.62 | 19.06 | 19.52 | 86,877 | +0.32(+1.67%) |
| May 29, 2012 | 19.74 | 19.75 | 19.16 | 19.20 | 56,639 | -0.80(-4.00%) |
| May 28, 2012 | 19.98 | 20.12 | 19.80 | 20.00 | 28,073 | +0.28(+1.42%) |
| May 25, 2012 | 19.57 | 19.73 | 19.45 | 19.72 | 75,023 | +0.24(+1.23%) |
| May 24, 2012 | 19.72 | 19.76 | 19.40 | 19.48 | 70,319 | +0.03(+0.15%) |
| May 23, 2012 | 19.75 | 19.75 | 19.19 | 19.45 | 103,332 | -0.31(-1.57%) |
| May 22, 2012 | 20.01 | 20.08 | 19.70 | 19.76 | 70,022 | -0.34(-1.69%) |
| May 18, 2012 | 20.10 | 20.10 | 20.10 | 0 | +0.37(+1.88%) | |
| May 17, 2012 | 19.25 | 19.85 | 19.17 | 19.73 | 67,948 | +0.77(+4.06%) |
| May 16, 2012 | 18.98 | 19.17 | 18.78 | 18.96 | 123,084 | -0.11(-0.58%) |
| May 15, 2012 | 19.12 | 19.41 | 19.06 | 19.07 | 106,246 | -0.23(-1.19%) |
| May 14, 2012 | 19.55 | 19.62 | 19.17 | 19.30 | 102,643 | -0.55(-2.77%) |
| May 11, 2012 | 19.80 | 19.93 | 19.72 | 19.85 | 114,449 | -0.16(-0.80%) |
| May 10, 2012 | 20.00 | 20.10 | 20.00 | 20.01 | 59,499 | -0.01(-0.05%) |
| May 09, 2012 | 20.08 | 20.17 | 19.86 | 20.02 | 116,523 | -0.18(-0.89%) |
| May 08, 2012 | 20.23 | 20.30 | 20.03 | 20.20 | 95,350 | -0.27(-1.32%) |
| May 07, 2012 | 20.61 | 20.62 | 20.41 | 20.47 | 37,590 | -0.22(-1.06%) |
| May 04, 2012 | 20.47 | 20.77 | 20.47 | 20.69 | 54,146 | +0.15(+0.73%) |
| May 03, 2012 | 20.57 | 20.57 | 20.39 | 20.54 | 34,009 | -0.17(-0.82%) |
| May 02, 2012 | 20.76 | 20.79 | 20.64 | 20.71 | 30,891 | -0.17(-0.81%) |
| May 01, 2012 | 21.00 | 21.10 | 20.80 | 20.88 | 52,649 | -0.08(-0.38%) |
| Apr 30, 2012 | 20.82 | 20.99 | 20.75 | 20.96 | 34,532 | +0.09(+0.43%) |
| Apr 27, 2012 | 20.95 | 20.95 | 20.85 | 20.87 | 52,376 | +0.01(+0.05%) |
| Apr 26, 2012 | 20.79 | 20.94 | 20.66 | 20.86 | 89,875 | +0.19(+0.92%) |
| Apr 25, 2012 | 20.79 | 20.79 | 20.36 | 20.67 | 54,643 | -0.09(-0.43%) |
| Apr 24, 2012 | 20.86 | 20.99 | 20.73 | 20.76 | 41,225 | -0.10(-0.48%) |
| Apr 23, 2012 | 20.98 | 21.00 | 20.73 | 20.86 | 56,053 | -0.33(-1.56%) |
| Apr 20, 2012 | 21.22 | 21.22 | 21.11 | 21.19 | 25,352 | -0.09(-0.42%) |
| Apr 19, 2012 | 21.28 | 21.35 | 21.19 | 21.28 | 74,075 | +0.20(+0.95%) |
| Apr 18, 2012 | 21.21 | 21.22 | 21.04 | 21.08 | 60,762 | -0.21(-0.99%) |
| Apr 17, 2012 | 21.41 | 21.41 | 21.10 | 21.29 | 59,479 | -0.17(-0.79%) |
| Apr 16, 2012 | 21.54 | 21.65 | 21.42 | 21.46 | 27,743 | -0.12(-0.56%) |
| Apr 13, 2012 | 21.73 | 21.87 | 21.51 | 21.58 | 111,803 | -0.31(-1.42%) |
| Apr 12, 2012 | 21.55 | 22.01 | 21.55 | 21.89 | 68,671 | +0.17(+0.78%) |
| Apr 11, 2012 | 21.78 | 21.80 | 21.66 | 21.72 | 86,368 | -0.03(-0.14%) |
| Apr 10, 2012 | 21.37 | 21.80 | 21.26 | 21.75 | 69,227 | +0.48(+2.26%) |
| Apr 09, 2012 | 21.51 | 21.54 | 21.27 | 21.27 | 38,078 | -0.04(-0.19%) |
| Apr 05, 2012 | 21.22 | 21.38 | 21.22 | 21.31 | 40,946 | +0.10(+0.47%) |
| Apr 04, 2012 | 21.35 | 21.41 | 21.02 | 21.21 | 90,813 | -0.41(-1.90%) |
| Apr 03, 2012 | 21.97 | 22.04 | 21.62 | 21.62 | 64,352 | -0.37(-1.68%) |
| Apr 02, 2012 | 21.89 | 22.19 | 21.89 | 21.99 | 44,183 | +0.10(+0.46%) |
| Mar 30, 2012 | 22.03 | 22.03 | 21.83 | 21.89 | 31,869 | +0.10(+0.46%) |
| Mar 29, 2012 | 21.85 | 21.86 | 21.51 | 21.79 | 40,740 | -0.06(-0.27%) |
| Mar 28, 2012 | 21.95 | 21.96 | 21.51 | 21.85 | 68,280 | -0.13(-0.59%) |
| Mar 27, 2012 | 22.15 | 22.18 | 21.95 | 21.98 | 92,272 | +0.00(+0.00%) |
| Mar 26, 2012 | 21.91 | 22.05 | 21.82 | 21.98 | 48,020 | +0.24(+1.10%) |
| Mar 23, 2012 | 21.52 | 21.88 | 21.52 | 21.74 | 36,850 | +0.42(+1.97%) |
| Mar 22, 2012 | 21.33 | 21.45 | 21.24 | 21.32 | 34,280 | -0.23(-1.07%) |
| Mar 21, 2012 | 21.57 | 21.69 | 21.48 | 21.55 | 22,666 | +0.02(+0.09%) |
| Mar 20, 2012 | 21.52 | 21.71 | 21.39 | 21.53 | 47,803 | -0.18(-0.83%) |
| Mar 19, 2012 | 21.56 | 21.86 | 21.56 | 21.71 | 59,280 | -0.01(-0.05%) |
| Mar 16, 2012 | 21.80 | 21.89 | 21.71 | 21.72 | 42,440 | -0.09(-0.41%) |
| Mar 15, 2012 | 21.77 | 21.93 | 21.62 | 21.81 | 93,860 | +0.14(+0.65%) |
| Mar 14, 2012 | 21.78 | 22.02 | 21.52 | 21.67 | 96,262 | -0.54(-2.43%) |
| Mar 13, 2012 | 22.44 | 22.54 | 22.10 | 22.21 | 44,793 | -0.34(-1.51%) |
| Mar 12, 2012 | 22.72 | 22.73 | 22.53 | 22.55 | 47,698 | -0.28(-1.23%) |
| Mar 09, 2012 | 22.31 | 22.84 | 22.26 | 22.83 | 66,100 | +0.23(+1.02%) |
| Mar 08, 2012 | 22.59 | 22.63 | 22.43 | 22.60 | 38,957 | +0.15(+0.67%) |
| Mar 07, 2012 | 22.28 | 22.56 | 22.19 | 22.45 | 54,946 | +0.26(+1.17%) |
| Mar 06, 2012 | 22.19 | 22.19 | 21.25 | 22.19 | 127,935 | -0.54(-2.38%) |
| Mar 05, 2012 | 22.80 | 22.85 | 22.49 | 22.73 | 165,143 | -0.13(-0.57%) |
| Mar 02, 2012 | 22.92 | 23.03 | 22.80 | 22.86 | 59,522 | -0.29(-1.25%) |
| Mar 01, 2012 | 22.86 | 23.25 | 22.74 | 23.15 | 120,564 | +0.50(+2.21%) |
| Feb 29, 2012 | 24.13 | 24.15 | 22.50 | 22.65 | 198,143 | -1.50(-6.21%) |
| Feb 28, 2012 | 23.90 | 24.28 | 23.86 | 24.15 | 98,704 | +0.49(+2.07%) |
| Feb 27, 2012 | 23.75 | 23.87 | 23.62 | 23.66 | 43,222 | -0.09(-0.38%) |
| Feb 24, 2012 | 23.76 | 23.89 | 23.66 | 23.75 | 57,589 | -0.01(-0.04%) |
| Feb 23, 2012 | 23.68 | 23.94 | 23.51 | 23.76 | 63,121 | +0.18(+0.76%) |
| Feb 22, 2012 | 23.17 | 23.58 | 23.16 | 23.58 | 67,983 | +0.40(+1.73%) |
| Feb 21, 2012 | 22.79 | 23.21 | 22.79 | 23.18 | 100,934 | +0.69(+3.07%) |
| Feb 17, 2012 | 22.49 | 22.49 | 22.49 | 0 | -0.17(-0.75%) | |
| Feb 16, 2012 | 22.41 | 22.66 | 22.31 | 22.66 | 51,565 | +0.09(+0.40%) |
| Feb 15, 2012 | 22.70 | 22.70 | 22.45 | 22.57 | 41,336 | +0.02(+0.09%) |
| Feb 14, 2012 | 22.66 | 22.75 | 22.47 | 22.55 | 26,504 | -0.14(-0.62%) |
| Feb 13, 2012 | 22.76 | 22.76 | 22.56 | 22.69 | 37,197 | +0.07(+0.31%) |
| Feb 10, 2012 | 22.70 | 22.77 | 22.57 | 22.62 | 79,136 | -0.18(-0.79%) |
| Feb 09, 2012 | 23.11 | 23.11 | 22.75 | 22.80 | 49,324 | -0.09(-0.39%) |
| Feb 08, 2012 | 23.13 | 23.17 | 22.76 | 22.89 | 32,432 | -0.20(-0.87%) |
| Feb 07, 2012 | 22.70 | 23.22 | 22.70 | 23.09 | 61,246 | +0.28(+1.23%) |
| Feb 06, 2012 | 22.84 | 22.87 | 22.72 | 22.81 | 38,850 | +0.01(+0.04%) |
| Feb 03, 2012 | 23.24 | 23.27 | 22.77 | 22.80 | 70,014 | -0.67(-2.85%) |
| Feb 02, 2012 | 23.08 | 23.50 | 23.00 | 23.47 | 59,861 | +0.48(+2.09%) |
| Feb 01, 2012 | 23.00 | 23.13 | 22.95 | 22.99 | 128,572 | +0.13(+0.57%) |
| Jan 31, 2012 | 23.25 | 23.25 | 22.82 | 22.86 | 95,418 | -0.15(-0.65%) |
| Jan 30, 2012 | 23.07 | 23.14 | 22.94 | 23.01 | 74,615 | -0.12(-0.52%) |
| Jan 27, 2012 | 22.75 | 23.15 | 22.74 | 23.13 | 75,184 | +0.49(+2.16%) |
| Jan 26, 2012 | 22.68 | 22.82 | 22.59 | 22.64 | 101,761 | +0.15(+0.67%) |
| Jan 25, 2012 | 21.77 | 22.49 | 21.67 | 22.49 | 117,099 | +0.63(+2.88%) |
| Jan 24, 2012 | 22.00 | 22.05 | 21.80 | 21.86 | 53,306 | -0.14(-0.64%) |
| Jan 23, 2012 | 21.95 | 22.28 | 21.95 | 22.00 | 62,894 | -0.05(-0.23%) |
| Jan 20, 2012 | 21.55 | 22.05 | 21.45 | 22.05 | 63,951 | +0.54(+2.51%) |
| Jan 19, 2012 | 21.51 | 21.53 | 21.39 | 21.51 | 26,824 | -0.06(-0.28%) |
| Jan 18, 2012 | 21.57 | 21.68 | 21.50 | 21.57 | 31,543 | +0.07(+0.33%) |
| Jan 17, 2012 | 21.68 | 21.73 | 21.48 | 21.50 | 45,098 | -0.23(-1.06%) |
| Jan 16, 2012 | 21.68 | 21.84 | 21.38 | 21.73 | 45,212 | +0.32(+1.49%) |
| Jan 13, 2012 | 21.40 | 21.52 | 21.31 | 21.41 | 37,490 | -0.09(-0.42%) |
| Jan 12, 2012 | 21.50 | 21.74 | 21.41 | 21.50 | 62,669 | +0.20(+0.94%) |
| Jan 11, 2012 | 20.99 | 21.35 | 20.99 | 21.30 | 44,259 | +0.26(+1.24%) |
| Jan 10, 2012 | 20.94 | 21.05 | 20.87 | 21.04 | 66,172 | +0.54(+2.63%) |
| Jan 09, 2012 | 20.66 | 20.69 | 20.47 | 20.50 | 34,212 | -0.03(-0.15%) |
| Jan 06, 2012 | 20.68 | 20.72 | 20.44 | 20.53 | 50,755 | -0.08(-0.39%) |
| Jan 05, 2012 | 20.33 | 20.64 | 20.28 | 20.61 | 69,968 | +0.19(+0.93%) |