| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Nov 30, 2012 | 82.08 | 82.75 | 82.04 | 82.46 | 0 | +0.34(+0.41%) |
| Nov 29, 2012 | 82.10 | 82.14 | 82.10 | 82.12 | 0 | +0.05(+0.06%) |
| Nov 28, 2012 | 82.01 | 82.07 | 82.01 | 82.07 | 0 | -0.01(-0.01%) |
| Nov 27, 2012 | 82.11 | 82.14 | 82.07 | 82.08 | 0 | +0.04(+0.05%) |
| Nov 26, 2012 | 82.06 | 82.07 | 82.00 | 82.04 | 0 | -0.35(-0.42%) |
| Nov 23, 2012 | 82.39 | 82.39 | 82.39 | 0 | -0.06(-0.07%) | |
| Nov 22, 2012 | 82.46 | 82.47 | 82.42 | 82.46 | 0 | -0.07(-0.08%) |
| Nov 21, 2012 | 82.53 | 82.54 | 82.50 | 82.53 | 0 | +0.84(+1.03%) |
| Nov 20, 2012 | 81.72 | 81.74 | 81.68 | 81.68 | 0 | +0.36(+0.44%) |
| Nov 19, 2012 | 81.38 | 81.39 | 81.29 | 81.32 | 0 | -0.02(-0.02%) |
| Nov 16, 2012 | 81.35 | 81.35 | 81.35 | 0 | +0.22(+0.27%) | |
| Nov 15, 2012 | 81.14 | 81.14 | 81.11 | 81.12 | 0 | +0.96(+1.20%) |
| Nov 14, 2012 | 80.21 | 80.24 | 80.15 | 80.17 | 0 | +0.74(+0.93%) |
| Nov 13, 2012 | 79.42 | 79.43 | 79.40 | 79.43 | 0 | -0.12(-0.15%) |
| Nov 12, 2012 | 79.51 | 79.56 | 79.51 | 79.54 | 0 | +0.04(+0.06%) |
| Nov 09, 2012 | 79.50 | 79.50 | 79.50 | 0 | +0.03(+0.03%) | |
| Nov 08, 2012 | 79.44 | 79.50 | 79.44 | 79.47 | 0 | -0.47(-0.59%) |
| Nov 07, 2012 | 79.97 | 79.97 | 79.89 | 79.94 | 0 | -0.44(-0.55%) |
| Nov 06, 2012 | 80.36 | 80.40 | 80.36 | 80.39 | 0 | +0.13(+0.16%) |
| Nov 05, 2012 | 80.24 | 80.28 | 80.22 | 80.25 | 0 | -0.21(-0.26%) |
| Nov 02, 2012 | 80.25 | 80.67 | 80.18 | 80.46 | 0 | +0.32(+0.40%) |
| Nov 01, 2012 | 80.15 | 80.17 | 80.11 | 80.14 | 0 | +0.35(+0.44%) |
| Oct 31, 2012 | 79.78 | 79.82 | 79.76 | 79.79 | 0 | +0.21(+0.26%) |
| Oct 30, 2012 | 79.61 | 79.61 | 79.54 | 79.58 | 0 | -0.18(-0.23%) |
| Oct 29, 2012 | 79.79 | 79.81 | 79.75 | 79.76 | 0 | +0.12(+0.15%) |
| Oct 26, 2012 | 80.32 | 80.33 | 79.49 | 79.64 | 0 | -0.70(-0.87%) |
| Oct 25, 2012 | 80.32 | 80.36 | 80.32 | 80.35 | 0 | +0.55(+0.69%) |
| Oct 24, 2012 | 79.79 | 79.82 | 79.79 | 79.79 | 0 | -0.07(-0.09%) |
| Oct 23, 2012 | 79.86 | 79.88 | 79.85 | 79.86 | 0 | +0.38(+0.47%) |
| Oct 19, 2012 | 79.33 | 79.49 | 79.14 | 79.49 | 0 | +0.20(+0.26%) |
| Oct 18, 2012 | 79.26 | 79.29 | 79.25 | 79.29 | 0 | +0.23(+0.29%) |
| Oct 17, 2012 | 78.94 | 79.07 | 78.94 | 79.06 | 0 | +0.20(+0.25%) |
| Oct 16, 2012 | 78.89 | 78.92 | 78.86 | 78.86 | 0 | +0.16(+0.20%) |
| Oct 15, 2012 | 78.71 | 78.71 | 78.68 | 78.69 | 0 | +0.27(+0.34%) |
| Oct 12, 2012 | 78.43 | 78.43 | 78.43 | 0 | +0.03(+0.04%) | |
| Oct 11, 2012 | 78.36 | 78.39 | 78.35 | 78.39 | 0 | +0.26(+0.33%) |
| Oct 10, 2012 | 78.18 | 78.19 | 78.14 | 78.14 | 0 | -0.12(-0.15%) |
| Oct 09, 2012 | 78.24 | 78.26 | 78.24 | 78.25 | 0 | -0.05(-0.06%) |
| Oct 08, 2012 | 78.31 | 78.32 | 78.29 | 78.31 | 0 | -0.35(-0.44%) |
| Oct 05, 2012 | 78.53 | 78.86 | 78.26 | 78.65 | 0 | +0.17(+0.22%) |
| Oct 04, 2012 | 78.47 | 78.49 | 78.46 | 78.49 | 0 | +0.00(+0.00%) |
| Oct 03, 2012 | 78.51 | 78.51 | 78.46 | 78.49 | 0 | +0.32(+0.41%) |
| Oct 02, 2012 | 78.18 | 78.18 | 78.17 | 78.17 | 0 | +0.17(+0.22%) |
| Oct 01, 2012 | 77.99 | 78.01 | 77.96 | 78.00 | 0 | +0.08(+0.10%) |
| Sep 28, 2012 | 77.92 | 77.92 | 77.92 | 0 | +0.29(+0.37%) | |
| Sep 27, 2012 | 77.61 | 77.64 | 77.61 | 77.62 | 0 | -0.10(-0.13%) |
| Sep 26, 2012 | 77.71 | 77.75 | 77.71 | 77.72 | 0 | -0.07(-0.09%) |
| Sep 25, 2012 | 77.79 | 77.81 | 77.78 | 77.79 | 0 | -0.05(-0.06%) |
| Sep 24, 2012 | 77.83 | 77.86 | 77.82 | 77.85 | 0 | -0.31(-0.40%) |
| Sep 21, 2012 | 78.15 | 78.15 | 78.15 | 0 | -0.08(-0.10%) | |
| Sep 20, 2012 | 78.22 | 78.25 | 78.22 | 78.24 | 0 | -0.12(-0.15%) |
| Sep 19, 2012 | 78.36 | 78.38 | 78.35 | 78.36 | 0 | -0.42(-0.53%) |
| Sep 18, 2012 | 78.81 | 78.81 | 78.78 | 78.78 | 0 | +0.06(+0.08%) |
| Sep 17, 2012 | 78.72 | 78.74 | 78.71 | 78.71 | 0 | +0.34(+0.43%) |
| Sep 14, 2012 | 78.38 | 78.38 | 78.38 | 0 | +0.89(+1.15%) | |
| Sep 13, 2012 | 77.50 | 77.51 | 77.46 | 77.49 | 0 | -0.36(-0.46%) |
| Sep 12, 2012 | 77.83 | 77.88 | 77.82 | 77.85 | 0 | +0.05(+0.06%) |
| Sep 11, 2012 | 77.78 | 77.81 | 77.76 | 77.79 | 0 | -0.46(-0.59%) |
| Sep 10, 2012 | 78.25 | 78.26 | 78.25 | 78.25 | 0 | +0.02(+0.03%) |
| Sep 07, 2012 | 78.89 | 79.03 | 78.00 | 78.24 | 0 | -0.63(-0.80%) |
| Sep 06, 2012 | 78.88 | 78.89 | 78.85 | 78.86 | 0 | +0.47(+0.60%) |
| Sep 05, 2012 | 78.39 | 78.40 | 78.39 | 78.39 | 0 | -0.04(-0.05%) |
| Sep 04, 2012 | 78.40 | 78.43 | 78.40 | 78.43 | 0 | +0.15(+0.19%) |
| Sep 03, 2012 | 78.28 | 78.29 | 78.28 | 78.29 | 0 | -0.08(-0.10%) |
| Aug 31, 2012 | 78.36 | 78.36 | 78.36 | 0 | -0.25(-0.32%) | |
| Aug 30, 2012 | 78.62 | 78.64 | 78.61 | 78.61 | 0 | -0.08(-0.10%) |
| Aug 29, 2012 | 78.71 | 78.72 | 78.67 | 78.69 | 0 | -0.06(-0.08%) |
| Aug 27, 2012 | 78.75 | 78.76 | 78.75 | 78.75 | 0 | +0.09(+0.11%) |
| Aug 24, 2012 | 78.67 | 78.67 | 78.67 | 0 | +0.13(+0.17%) | |
| Aug 23, 2012 | 78.50 | 78.56 | 78.44 | 78.54 | 0 | -0.02(-0.03%) |
| Aug 22, 2012 | 78.60 | 78.61 | 78.54 | 78.56 | 0 | -0.72(-0.91%) |
| Aug 21, 2012 | 79.29 | 79.31 | 79.26 | 79.28 | 0 | -0.21(-0.26%) |
| Aug 20, 2012 | 79.46 | 79.50 | 79.44 | 79.49 | 0 | -0.08(-0.10%) |
| Aug 17, 2012 | 79.57 | 79.57 | 79.57 | 0 | +0.24(+0.30%) | |
| Aug 16, 2012 | 79.36 | 79.36 | 79.31 | 79.32 | 0 | +0.35(+0.44%) |
| Aug 15, 2012 | 78.93 | 79.00 | 78.92 | 78.97 | 0 | +0.24(+0.30%) |
| Aug 14, 2012 | 78.74 | 78.75 | 78.68 | 78.74 | 0 | +0.42(+0.54%) |
| Aug 13, 2012 | 78.31 | 78.32 | 78.29 | 78.32 | 0 | +0.04(+0.05%) |
| Aug 10, 2012 | 78.28 | 78.28 | 78.28 | 0 | -0.30(-0.38%) | |
| Aug 09, 2012 | 78.54 | 78.58 | 78.54 | 78.57 | 0 | +0.15(+0.19%) |
| Aug 08, 2012 | 78.44 | 78.46 | 78.40 | 78.43 | 0 | -0.17(-0.22%) |
| Aug 07, 2012 | 78.58 | 78.60 | 78.57 | 78.60 | 0 | +0.34(+0.43%) |
| Aug 06, 2012 | 78.22 | 78.26 | 78.21 | 78.25 | 0 | -0.20(-0.25%) |
| Aug 03, 2012 | 78.46 | 78.46 | 78.46 | 0 | +0.22(+0.28%) | |
| Aug 02, 2012 | 78.25 | 78.28 | 78.21 | 78.24 | 0 | -0.18(-0.23%) |
| Aug 01, 2012 | 78.43 | 78.43 | 78.39 | 78.42 | 0 | +0.30(+0.38%) |
| Jul 31, 2012 | 78.11 | 78.11 | 78.10 | 78.11 | 0 | -0.04(-0.05%) |
| Jul 30, 2012 | 78.18 | 78.18 | 78.14 | 78.15 | 0 | -0.31(-0.40%) |
| Jul 27, 2012 | 78.46 | 78.46 | 78.46 | 0 | +0.27(+0.35%) | |
| Jul 26, 2012 | 78.18 | 78.21 | 78.17 | 78.19 | 0 | +0.06(+0.08%) |
| Jul 25, 2012 | 78.17 | 78.17 | 78.14 | 78.14 | 0 | -0.03(-0.04%) |
| Jul 24, 2012 | 78.17 | 78.18 | 78.15 | 78.17 | 0 | -0.15(-0.19%) |
| Jul 23, 2012 | 78.36 | 78.36 | 78.32 | 78.32 | 0 | -0.20(-0.25%) |
| Jul 20, 2012 | 78.51 | 78.51 | 78.51 | 0 | -0.11(-0.14%) | |
| Jul 19, 2012 | 78.60 | 78.64 | 78.58 | 78.62 | 0 | -0.18(-0.23%) |
| Jul 18, 2012 | 78.79 | 78.82 | 78.79 | 78.81 | 0 | -0.27(-0.34%) |
| Jul 17, 2012 | 79.08 | 79.08 | 79.07 | 79.07 | 0 | +0.21(+0.27%) |
| Jul 16, 2012 | 78.86 | 78.88 | 78.86 | 78.86 | 0 | -0.30(-0.38%) |
| Jul 13, 2012 | 79.17 | 79.17 | 79.17 | 0 | -0.11(-0.14%) | |
| Jul 12, 2012 | 79.28 | 79.29 | 79.26 | 79.28 | 0 | -0.45(-0.56%) |
| Jul 11, 2012 | 79.71 | 79.75 | 79.71 | 79.72 | 0 | +0.33(+0.42%) |
| Jul 10, 2012 | 79.39 | 79.40 | 79.38 | 79.39 | 0 | -0.16(-0.20%) |
| Jul 09, 2012 | 79.57 | 79.57 | 79.54 | 79.56 | 0 | -0.10(-0.12%) |
| Jul 06, 2012 | 79.65 | 79.65 | 79.65 | 0 | -0.25(-0.32%) | |
| Jul 05, 2012 | 79.90 | 79.92 | 79.89 | 79.90 | 0 | +0.04(+0.05%) |
| Jul 04, 2012 | 79.85 | 79.88 | 79.83 | 79.86 | 0 | +0.05(+0.06%) |
| Jul 03, 2012 | 79.81 | 79.82 | 79.79 | 79.82 | 0 | +0.30(+0.38%) |
| Jul 02, 2012 | 79.50 | 79.53 | 79.49 | 79.51 | 0 | -0.28(-0.35%) |
| Jun 29, 2012 | 79.33 | 79.99 | 79.12 | 79.79 | 0 | +0.37(+0.47%) |
| Jun 28, 2012 | 79.46 | 79.51 | 79.42 | 79.43 | 0 | -0.26(-0.33%) |
| Jun 27, 2012 | 79.69 | 79.69 | 79.68 | 79.68 | 0 | +0.19(+0.24%) |
| Jun 26, 2012 | 79.46 | 79.51 | 79.46 | 79.50 | 0 | -0.14(-0.18%) |
| Jun 25, 2012 | 79.68 | 79.68 | 79.57 | 79.64 | 0 | -0.78(-0.97%) |
| Jun 22, 2012 | 80.42 | 80.42 | 80.42 | 0 | +0.21(+0.26%) | |
| Jun 21, 2012 | 80.25 | 80.25 | 80.19 | 80.21 | 0 | +0.74(+0.93%) |
| Jun 20, 2012 | 79.46 | 79.53 | 79.43 | 79.46 | 0 | +0.49(+0.62%) |
| Jun 19, 2012 | 78.93 | 79.00 | 78.93 | 78.97 | 0 | -0.12(-0.15%) |
| Jun 18, 2012 | 79.10 | 79.11 | 79.08 | 79.10 | 0 | +0.45(+0.57%) |
| Jun 15, 2012 | 79.40 | 79.50 | 78.61 | 78.64 | 0 | -0.75(-0.94%) |
| Jun 14, 2012 | 79.38 | 79.40 | 79.36 | 79.39 | 0 | -0.04(-0.05%) |
| Jun 13, 2012 | 79.43 | 79.44 | 79.40 | 79.43 | 0 | -0.12(-0.15%) |
| Jun 12, 2012 | 79.58 | 79.62 | 79.54 | 79.56 | 0 | +0.18(+0.23%) |
| Jun 11, 2012 | 79.39 | 79.40 | 79.36 | 79.38 | 0 | -0.07(-0.09%) |
| Jun 08, 2012 | 79.44 | 79.44 | 79.44 | 0 | -0.22(-0.28%) | |
| Jun 07, 2012 | 79.64 | 79.68 | 79.62 | 79.67 | 0 | +0.42(+0.53%) |
| Jun 06, 2012 | 79.24 | 79.25 | 79.22 | 79.25 | 0 | +0.50(+0.63%) |
| Jun 05, 2012 | 78.72 | 78.75 | 78.72 | 78.75 | 0 | +0.42(+0.54%) |
| Jun 04, 2012 | 78.39 | 78.39 | 78.31 | 78.32 | 0 | +0.36(+0.46%) |
| Jun 01, 2012 | 77.96 | 77.96 | 77.96 | 0 | -0.40(-0.51%) | |
| May 31, 2012 | 78.36 | 78.36 | 78.35 | 78.36 | 0 | -0.75(-0.95%) |
| May 30, 2012 | 79.08 | 79.12 | 79.07 | 79.11 | 0 | -0.41(-0.52%) |
| May 29, 2012 | 79.51 | 79.54 | 79.49 | 79.53 | 0 | +0.06(+0.08%) |
| May 28, 2012 | 79.46 | 79.49 | 79.46 | 79.46 | 0 | -0.20(-0.25%) |
| May 25, 2012 | 79.67 | 79.67 | 79.67 | 0 | +0.08(+0.10%) | |
| May 24, 2012 | 79.57 | 79.60 | 79.57 | 79.58 | 0 | +0.14(+0.18%) |
| May 23, 2012 | 79.46 | 79.46 | 79.44 | 79.44 | 0 | -0.52(-0.65%) |
| May 22, 2012 | 79.96 | 79.97 | 79.96 | 79.96 | 0 | +0.66(+0.83%) |
| May 21, 2012 | 79.29 | 79.32 | 79.28 | 79.31 | 0 | +0.30(+0.38%) |
| May 18, 2012 | 79.00 | 79.00 | 79.00 | 0 | -0.31(-0.39%) | |
| May 17, 2012 | 79.32 | 79.39 | 79.29 | 79.32 | 0 | -1.01(-1.26%) |
| May 16, 2012 | 80.31 | 80.35 | 80.29 | 80.32 | 0 | +0.09(+0.11%) |
| May 15, 2012 | 80.18 | 80.24 | 80.14 | 80.24 | 0 | +0.38(+0.48%) |
| May 14, 2012 | 79.85 | 79.86 | 79.81 | 79.86 | 0 | -0.07(-0.09%) |
| May 11, 2012 | 79.93 | 79.93 | 79.93 | 0 | +0.04(+0.05%) | |
| May 10, 2012 | 79.88 | 79.92 | 79.86 | 79.89 | 0 | +0.26(+0.33%) |
| May 09, 2012 | 79.67 | 79.68 | 79.61 | 79.62 | 0 | -0.25(-0.31%) |
| May 08, 2012 | 79.86 | 79.89 | 79.86 | 79.88 | 0 | -0.01(-0.01%) |
| May 07, 2012 | 79.89 | 79.90 | 79.89 | 79.89 | 0 | +0.05(+0.06%) |
| May 04, 2012 | 79.83 | 79.83 | 79.83 | 0 | -0.35(-0.44%) | |
| May 03, 2012 | 80.19 | 80.19 | 80.18 | 80.18 | 0 | +0.07(+0.09%) |
| May 02, 2012 | 80.12 | 80.14 | 80.11 | 80.11 | 0 | +0.03(+0.04%) |
| May 01, 2012 | 80.07 | 80.08 | 80.04 | 80.08 | 0 | +0.27(+0.34%) |
| Apr 30, 2012 | 79.78 | 79.83 | 79.76 | 79.82 | 0 | -0.38(-0.47%) |
| Apr 27, 2012 | 80.19 | 80.19 | 80.19 | 0 | -0.80(-0.99%) | |
| Apr 26, 2012 | 81.06 | 81.11 | 80.96 | 81.00 | 0 | -0.32(-0.39%) |
| Apr 25, 2012 | 81.33 | 81.33 | 81.32 | 81.32 | 0 | +0.00(+0.00%) |
| Apr 24, 2012 | 81.32 | 81.32 | 81.29 | 81.32 | 0 | +0.15(+0.18%) |
| Apr 23, 2012 | 81.15 | 81.17 | 81.15 | 81.17 | 0 | -0.36(-0.44%) |
| Apr 20, 2012 | 81.53 | 81.53 | 81.53 | 0 | -0.07(-0.09%) | |
| Apr 19, 2012 | 81.62 | 81.64 | 81.58 | 81.60 | 0 | +0.31(+0.38%) |
| Apr 18, 2012 | 81.28 | 81.29 | 81.22 | 81.29 | 0 | +0.40(+0.49%) |
| Apr 17, 2012 | 80.86 | 80.89 | 80.85 | 80.89 | 0 | +0.46(+0.57%) |
| Apr 16, 2012 | 80.43 | 80.46 | 80.36 | 80.43 | 0 | -0.49(-0.61%) |
| Apr 13, 2012 | 80.92 | 80.92 | 80.92 | 0 | +0.05(+0.06%) | |
| Apr 12, 2012 | 80.86 | 80.86 | 80.86 | 80.86 | 0 | +0.01(+0.01%) |
| Apr 11, 2012 | 80.86 | 80.88 | 80.83 | 80.86 | 0 | +0.15(+0.19%) |
| Apr 10, 2012 | 80.64 | 80.75 | 80.64 | 80.71 | 0 | -0.85(-1.04%) |
| Apr 09, 2012 | 81.56 | 81.57 | 81.53 | 81.56 | 0 | -0.81(-0.98%) |
| Apr 05, 2012 | 82.32 | 82.39 | 82.31 | 82.36 | 0 | -0.05(-0.06%) |
| Apr 04, 2012 | 82.43 | 82.44 | 82.40 | 82.42 | 0 | -0.39(-0.47%) |
| Apr 03, 2012 | 82.81 | 82.86 | 82.75 | 82.81 | 0 | +0.71(+0.86%) |
| Apr 02, 2012 | 82.04 | 82.11 | 82.04 | 82.10 | 0 | -0.76(-0.92%) |
| Mar 30, 2012 | 82.86 | 82.86 | 82.86 | 0 | +0.45(+0.55%) | |
| Mar 29, 2012 | 82.38 | 82.46 | 82.38 | 82.40 | 0 | -0.48(-0.58%) |
| Mar 28, 2012 | 82.88 | 82.89 | 82.86 | 82.89 | 0 | -0.31(-0.37%) |
| Mar 27, 2012 | 83.17 | 83.19 | 83.14 | 83.19 | 0 | +0.32(+0.39%) |
| Mar 26, 2012 | 82.86 | 82.88 | 82.85 | 82.88 | 0 | +0.47(+0.57%) |
| Mar 23, 2012 | 82.40 | 82.40 | 82.40 | 0 | -0.23(-0.28%) | |
| Mar 22, 2012 | 82.54 | 82.64 | 82.54 | 82.64 | 0 | -0.79(-0.95%) |
| Mar 21, 2012 | 83.38 | 83.43 | 83.35 | 83.43 | 0 | -0.28(-0.33%) |
| Mar 20, 2012 | 83.72 | 83.72 | 83.67 | 83.71 | 0 | +0.31(+0.37%) |
| Mar 19, 2012 | 83.33 | 83.43 | 83.32 | 83.39 | 0 | +0.02(+0.02%) |
| Mar 16, 2012 | 83.38 | 83.38 | 83.38 | 0 | -0.21(-0.25%) | |
| Mar 15, 2012 | 83.51 | 83.61 | 83.49 | 83.58 | 0 | -0.13(-0.16%) |
| Mar 14, 2012 | 83.67 | 83.75 | 83.65 | 83.71 | 0 | +0.84(+1.01%) |
| Mar 13, 2012 | 82.90 | 83.01 | 82.88 | 82.88 | 0 | +0.59(+0.72%) |
| Mar 12, 2012 | 82.32 | 82.32 | 82.24 | 82.29 | 0 | -0.16(-0.19%) |
| Mar 09, 2012 | 82.44 | 82.44 | 82.44 | 0 | +0.92(+1.13%) | |
| Mar 08, 2012 | 81.57 | 81.57 | 81.53 | 81.53 | 0 | +0.37(+0.46%) |
| Mar 07, 2012 | 81.11 | 81.17 | 81.11 | 81.15 | 0 | +0.42(+0.52%) |
| Mar 06, 2012 | 80.85 | 80.86 | 80.68 | 80.74 | 0 | -0.78(-0.96%) |
| Mar 05, 2012 | 81.54 | 81.56 | 81.50 | 81.51 | 0 | -0.30(-0.37%) |
| Mar 02, 2012 | 81.82 | 81.82 | 81.82 | 0 | +0.69(+0.85%) | |
| Mar 01, 2012 | 81.11 | 81.14 | 81.07 | 81.12 | 0 | -0.16(-0.20%) |
| Feb 29, 2012 | 81.18 | 81.31 | 81.18 | 81.29 | 0 | +0.79(+0.98%) |
| Feb 28, 2012 | 80.46 | 80.50 | 80.43 | 80.50 | 0 | +0.02(+0.02%) |
| Feb 27, 2012 | 80.60 | 80.61 | 80.43 | 80.47 | 0 | -0.74(-0.91%) |
| Feb 24, 2012 | 81.21 | 81.21 | 81.21 | 0 | +1.24(+1.55%) | |
| Feb 23, 2012 | 79.94 | 79.97 | 79.93 | 79.97 | 0 | -0.31(-0.39%) |
| Feb 22, 2012 | 80.26 | 80.29 | 80.22 | 80.29 | 0 | +0.55(+0.69%) |
| Feb 21, 2012 | 79.68 | 79.74 | 79.68 | 79.74 | 0 | +0.12(+0.15%) |
| Feb 20, 2012 | 79.64 | 79.64 | 79.61 | 79.61 | 0 | +0.08(+0.10%) |
| Feb 17, 2012 | 79.54 | 79.54 | 79.54 | 0 | +0.65(+0.82%) | |
| Feb 16, 2012 | 78.89 | 78.89 | 78.85 | 78.89 | 0 | +0.50(+0.64%) |
| Feb 15, 2012 | 78.39 | 78.40 | 78.36 | 78.39 | 0 | -0.02(-0.03%) |
| Feb 14, 2012 | 78.43 | 78.44 | 78.39 | 78.40 | 0 | +0.85(+1.10%) |
| Feb 13, 2012 | 77.58 | 77.61 | 77.54 | 77.56 | 0 | -0.04(-0.05%) |
| Feb 10, 2012 | 77.60 | 77.60 | 77.60 | 0 | -0.05(-0.06%) | |
| Feb 09, 2012 | 77.68 | 77.68 | 77.64 | 77.64 | 0 | +0.60(+0.78%) |
| Feb 08, 2012 | 77.06 | 77.07 | 77.04 | 77.04 | 0 | +0.26(+0.34%) |
| Feb 07, 2012 | 76.76 | 76.81 | 76.75 | 76.79 | 0 | +0.22(+0.29%) |
| Feb 06, 2012 | 76.53 | 76.57 | 76.53 | 76.57 | 0 | -0.03(-0.04%) |
| Feb 03, 2012 | 76.60 | 76.60 | 76.60 | 0 | +0.42(+0.55%) | |
| Feb 02, 2012 | 76.21 | 76.21 | 76.17 | 76.18 | 0 | +0.00(+0.00%) |
| Feb 01, 2012 | 76.17 | 76.18 | 76.15 | 76.18 | 0 | -0.12(-0.16%) |
| Jan 31, 2012 | 76.24 | 76.29 | 76.22 | 76.29 | 0 | -0.07(-0.09%) |
| Jan 30, 2012 | 76.36 | 76.39 | 76.36 | 76.36 | 0 | -0.35(-0.46%) |
| Jan 27, 2012 | 76.71 | 76.71 | 76.71 | 0 | -0.73(-0.94%) | |
| Jan 26, 2012 | 77.43 | 77.46 | 77.40 | 77.44 | 0 | -0.24(-0.31%) |
| Jan 25, 2012 | 77.75 | 77.76 | 77.68 | 77.68 | 0 | +0.04(+0.05%) |
| Jan 24, 2012 | 77.68 | 77.71 | 77.64 | 77.64 | 0 | +0.68(+0.88%) |
| Jan 23, 2012 | 77.00 | 77.00 | 76.94 | 76.96 | 0 | -0.06(-0.08%) |
| Jan 20, 2012 | 77.03 | 77.03 | 77.03 | 0 | -0.07(-0.09%) | |
| Jan 19, 2012 | 77.10 | 77.11 | 77.04 | 77.10 | 0 | +0.32(+0.42%) |
| Jan 18, 2012 | 76.78 | 76.79 | 76.75 | 76.78 | 0 | -0.05(-0.07%) |
| Jan 17, 2012 | 76.82 | 76.82 | 76.82 | 76.82 | 0 | +0.03(+0.04%) |
| Jan 16, 2012 | 76.78 | 76.81 | 76.78 | 76.79 | 0 | -0.17(-0.22%) |
| Jan 13, 2012 | 76.96 | 76.96 | 76.96 | 0 | +0.20(+0.26%) | |
| Jan 12, 2012 | 76.81 | 76.82 | 76.76 | 76.76 | 0 | -0.11(-0.14%) |
| Jan 11, 2012 | 76.89 | 76.89 | 76.86 | 76.88 | 0 | +0.05(+0.07%) |
| Jan 10, 2012 | 76.81 | 76.83 | 76.81 | 76.82 | 0 | -0.03(-0.04%) |
| Jan 09, 2012 | 76.86 | 76.86 | 76.85 | 76.86 | 0 | -0.11(-0.14%) |
| Jan 06, 2012 | 76.96 | 76.96 | 76.96 | 0 | -0.15(-0.19%) | |
| Jan 05, 2012 | 77.11 | 77.11 | 77.06 | 77.11 | 0 | +0.37(+0.48%) |
| Jan 04, 2012 | 76.75 | 76.78 | 76.74 | 76.75 | 0 | -0.14(-0.18%) |
| Dec 30, 2011 | 76.89 | 76.89 | 76.89 | 0 | -0.73(-0.94%) | |
| Dec 29, 2011 | 77.60 | 77.62 | 77.58 | 77.61 | 0 | -0.35(-0.45%) |
| Dec 28, 2011 | 77.97 | 77.97 | 77.96 | 77.96 | 0 | +0.10(+0.13%) |
| Dec 27, 2011 | 77.85 | 77.86 | 77.85 | 77.86 | 0 | -0.11(-0.14%) |
| Dec 26, 2011 | 77.97 | 77.97 | 77.97 | 0 | -0.13(-0.17%) | |
| Dec 23, 2011 | 78.11 | 78.11 | 78.11 | 0 | +0.07(+0.09%) | |
| Dec 21, 2011 | 78.01 | 78.04 | 78.01 | 78.04 | 0 | +0.20(+0.26%) |
| Dec 20, 2011 | 77.86 | 77.86 | 77.82 | 77.83 | 0 | -0.19(-0.24%) |
| Dec 19, 2011 | 78.01 | 78.04 | 78.01 | 78.03 | 0 | +0.27(+0.35%) |
| Dec 16, 2011 | 77.75 | 77.75 | 77.75 | 0 | -0.14(-0.18%) | |
| Dec 15, 2011 | 77.89 | 77.92 | 77.89 | 77.89 | 0 | -0.18(-0.23%) |
| Dec 14, 2011 | 78.07 | 78.08 | 78.07 | 78.07 | 0 | +0.11(+0.14%) |
| Dec 13, 2011 | 78.00 | 78.00 | 77.96 | 77.96 | 0 | +0.02(+0.03%) |
| Dec 12, 2011 | 77.96 | 77.96 | 77.92 | 77.94 | 0 | +0.33(+0.43%) |
| Dec 09, 2011 | 77.61 | 77.61 | 77.61 | 0 | -0.01(-0.01%) | |
| Dec 08, 2011 | 77.65 | 77.67 | 77.61 | 77.62 | 0 | -0.02(-0.03%) |
| Dec 07, 2011 | 77.64 | 77.65 | 77.64 | 77.64 | 0 | -0.07(-0.09%) |
| Dec 06, 2011 | 77.71 | 77.74 | 77.71 | 77.71 | 0 | -0.11(-0.14%) |
| Dec 05, 2011 | 77.81 | 77.83 | 77.79 | 77.82 | 0 | -0.12(-0.15%) |
| Dec 02, 2011 | 77.94 | 77.94 | 77.94 | 0 | +0.23(+0.30%) |
