| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Feb 29, 2012 | 19.23 | 19.52 | 18.47 | 18.56 | 11,785,762 | -0.66(-3.43%) |
| Feb 28, 2012 | 19.75 | 19.81 | 18.95 | 19.22 | 11,780,618 | -0.51(-2.58%) |
| Feb 27, 2012 | 20.10 | 20.27 | 19.55 | 19.73 | 13,635,190 | -0.73(-3.57%) |
| Feb 24, 2012 | 19.22 | 20.49 | 18.79 | 20.46 | 27,206,133 | +0.64(+3.23%) |
| Feb 23, 2012 | 19.46 | 19.85 | 19.18 | 19.82 | 9,604,375 | +0.33(+1.69%) |
| Feb 22, 2012 | 19.93 | 20.26 | 19.41 | 19.49 | 9,160,376 | -0.55(-2.74%) |
| Feb 21, 2012 | 20.40 | 20.70 | 19.94 | 20.04 | 9,508,141 | -0.07(-0.35%) |
| Feb 17, 2012 | 21.12 | 21.19 | 20.00 | 20.11 | 8,556,893 | -0.79(-3.78%) |
| Feb 16, 2012 | 20.54 | 20.97 | 19.91 | 20.90 | 8,601,038 | +0.44(+2.15%) |
| Feb 15, 2012 | 20.20 | 20.60 | 19.80 | 20.46 | 10,066,632 | +0.51(+2.56%) |
| Feb 14, 2012 | 20.49 | 20.49 | 19.59 | 19.95 | 10,859,727 | -0.61(-2.97%) |
| Feb 13, 2012 | 21.44 | 21.45 | 20.31 | 20.56 | 9,485,943 | -0.48(-2.28%) |
| Feb 10, 2012 | 21.77 | 22.05 | 20.85 | 21.04 | 12,981,336 | -1.36(-6.07%) |
| Feb 09, 2012 | 22.05 | 22.45 | 21.48 | 22.40 | 11,071,125 | +0.55(+2.52%) |
| Feb 08, 2012 | 22.45 | 23.08 | 21.76 | 21.85 | 12,213,514 | -0.46(-2.06%) |
| Feb 07, 2012 | 23.39 | 23.49 | 22.20 | 22.31 | 11,351,713 | -1.23(-5.23%) |
| Feb 06, 2012 | 22.10 | 23.68 | 22.01 | 23.54 | 14,678,877 | +0.76(+3.34%) |
| Feb 03, 2012 | 22.43 | 22.89 | 21.90 | 22.78 | 13,523,829 | +1.14(+5.27%) |
| Feb 02, 2012 | 20.15 | 21.97 | 20.08 | 21.64 | 15,633,833 | +1.52(+7.55%) |
| Feb 01, 2012 | 20.52 | 20.67 | 20.01 | 20.12 | 10,103,511 | +0.00(+0.00%) |
| Jan 31, 2012 | 21.44 | 21.59 | 20.02 | 20.12 | 12,311,149 | -0.99(-4.69%) |
| Jan 30, 2012 | 21.16 | 21.32 | 20.68 | 21.11 | 8,157,430 | -0.54(-2.49%) |
| Jan 27, 2012 | 20.24 | 21.75 | 20.24 | 21.65 | 9,747,006 | +1.20(+5.87%) |
| Jan 26, 2012 | 21.44 | 21.60 | 20.22 | 20.45 | 9,129,340 | -0.47(-2.25%) |
| Jan 25, 2012 | 20.03 | 21.00 | 19.71 | 20.92 | 11,247,220 | +0.79(+3.92%) |
| Jan 24, 2012 | 20.10 | 20.32 | 19.53 | 20.13 | 10,862,079 | -0.63(-3.03%) |
| Jan 23, 2012 | 20.28 | 21.26 | 20.04 | 20.76 | 9,245,951 | +0.85(+4.27%) |
| Jan 20, 2012 | 19.51 | 19.96 | 19.15 | 19.91 | 8,877,295 | +0.27(+1.37%) |
| Jan 19, 2012 | 20.03 | 20.09 | 19.48 | 19.64 | 8,950,809 | -0.13(-0.66%) |
| Jan 18, 2012 | 19.11 | 20.00 | 18.74 | 19.77 | 9,933,755 | +0.49(+2.54%) |
| Jan 17, 2012 | 20.42 | 20.50 | 19.25 | 19.28 | 13,103,753 | -0.91(-4.51%) |
| Jan 13, 2012 | 21.70 | 21.75 | 20.00 | 20.19 | 14,082,271 | -2.36(-10.47%) |
| Jan 12, 2012 | 22.49 | 22.80 | 21.79 | 22.55 | 10,319,239 | +0.35(+1.58%) |
| Jan 11, 2012 | 21.29 | 22.29 | 21.09 | 22.20 | 7,402,992 | +0.87(+4.08%) |
| Jan 10, 2012 | 21.47 | 21.81 | 21.11 | 21.33 | 5,700,888 | +0.57(+2.75%) |
| Jan 09, 2012 | 21.39 | 21.59 | 20.70 | 20.76 | 5,514,991 | -0.44(-2.08%) |
| Jan 06, 2012 | 21.99 | 21.99 | 21.16 | 21.20 | 5,231,026 | -0.52(-2.39%) |
| Jan 05, 2012 | 21.84 | 22.14 | 21.54 | 21.72 | 6,158,079 | -0.49(-2.21%) |
| Jan 04, 2012 | 21.35 | 22.37 | 21.12 | 22.21 | 7,065,741 | +1.78(+8.71%) |
| Dec 30, 2011 | 19.73 | 20.61 | 19.70 | 20.43 | 4,995,106 | +0.73(+3.71%) |
| Dec 29, 2011 | 19.61 | 19.86 | 19.34 | 19.70 | 4,581,018 | +0.23(+1.18%) |
| Dec 28, 2011 | 20.08 | 20.32 | 19.28 | 19.47 | 7,306,719 | -0.67(-3.33%) |
| Dec 27, 2011 | 20.59 | 20.77 | 19.97 | 20.14 | 3,876,917 | -0.59(-2.85%) |
| Dec 23, 2011 | 21.27 | 21.33 | 20.50 | 20.73 | 5,038,459 | +0.71(+3.55%) |
| Dec 21, 2011 | 19.31 | 20.10 | 18.89 | 20.02 | 8,409,042 | +0.55(+2.82%) |
| Dec 20, 2011 | 18.73 | 19.59 | 18.73 | 19.47 | 8,061,637 | +1.27(+6.98%) |
| Dec 19, 2011 | 19.79 | 19.79 | 18.10 | 18.20 | 10,333,797 | -1.42(-7.24%) |
| Dec 16, 2011 | 19.53 | 20.01 | 19.18 | 19.62 | 8,553,759 | +0.35(+1.82%) |
| Dec 15, 2011 | 20.60 | 20.67 | 19.17 | 19.27 | 9,453,093 | -0.60(-3.02%) |
| Dec 14, 2011 | 19.99 | 20.42 | 19.27 | 19.87 | 13,078,303 | -0.68(-3.31%) |
| Dec 13, 2011 | 21.66 | 22.04 | 20.30 | 20.55 | 7,889,369 | -0.84(-3.93%) |
| Dec 12, 2011 | 22.58 | 22.61 | 20.54 | 21.39 | 14,061,277 | -2.06(-8.78%) |
| Dec 09, 2011 | 22.77 | 23.75 | 22.56 | 23.45 | 6,891,620 | +0.85(+3.76%) |
| Dec 08, 2011 | 24.35 | 24.36 | 22.50 | 22.60 | 10,869,314 | -2.06(-8.35%) |
| Dec 07, 2011 | 24.41 | 24.82 | 23.75 | 24.66 | 7,665,897 | -0.22(-0.88%) |
| Dec 06, 2011 | 24.97 | 25.47 | 24.11 | 24.88 | 9,616,984 | -0.29(-1.15%) |
| Dec 05, 2011 | 25.04 | 25.48 | 24.68 | 25.17 | 8,100,097 | +1.06(+4.40%) |
| Dec 02, 2011 | 24.53 | 25.17 | 24.01 | 24.11 | 8,063,227 | +0.12(+0.50%) |