| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| 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%) |