| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Feb 29, 2012 | 41.87 | 42.37 | 41.85 | 41.99 | 14,858,695 | +0.06(+0.14%) |
| Feb 28, 2012 | 41.75 | 41.97 | 41.55 | 41.93 | 6,895,611 | +0.29(+0.70%) |
| Feb 27, 2012 | 41.70 | 41.95 | 41.30 | 41.64 | 9,131,864 | +0.33(+0.80%) |
| Feb 24, 2012 | 41.44 | 41.58 | 41.23 | 41.31 | 6,150,515 | -0.17(-0.41%) |
| Feb 23, 2012 | 41.28 | 41.67 | 41.09 | 41.48 | 6,270,943 | +0.21(+0.51%) |
| Feb 22, 2012 | 41.55 | 41.71 | 41.15 | 41.27 | 6,176,059 | -0.30(-0.72%) |
| Feb 21, 2012 | 41.80 | 41.90 | 41.49 | 41.57 | 5,674,879 | -0.18(-0.43%) |
| Feb 17, 2012 | 41.71 | 41.86 | 41.55 | 41.75 | 7,759,584 | +0.21(+0.51%) |
| Feb 16, 2012 | 41.23 | 41.73 | 41.08 | 41.54 | 7,468,389 | +0.29(+0.70%) |
| Feb 15, 2012 | 41.48 | 41.75 | 41.12 | 41.25 | 7,891,165 | -0.35(-0.84%) |
| Feb 14, 2012 | 41.50 | 41.62 | 41.26 | 41.60 | 8,210,289 | -0.19(-0.45%) |
| Feb 13, 2012 | 41.62 | 41.92 | 41.59 | 41.79 | 9,065,754 | +0.34(+0.82%) |
| Feb 10, 2012 | 40.94 | 41.45 | 40.83 | 41.45 | 10,115,296 | -0.08(-0.19%) |
| Feb 09, 2012 | 40.75 | 41.64 | 40.55 | 41.53 | 13,580,951 | +0.26(+0.63%) |
| Feb 08, 2012 | 41.37 | 41.91 | 40.99 | 41.27 | 21,687,031 | +0.29(+0.71%) |
| Feb 07, 2012 | 40.73 | 41.15 | 40.20 | 40.98 | 20,043,872 | +0.52(+1.29%) |
| Feb 06, 2012 | 40.00 | 40.59 | 39.96 | 40.46 | 11,521,041 | +0.46(+1.15%) |
| Feb 03, 2012 | 39.43 | 40.00 | 39.36 | 40.00 | 11,609,933 | +1.09(+2.80%) |
| Feb 02, 2012 | 39.22 | 39.25 | 38.56 | 38.91 | 9,076,757 | -0.42(-1.07%) |
| Feb 01, 2012 | 39.25 | 39.67 | 39.16 | 39.33 | 8,900,934 | +0.43(+1.11%) |
| Jan 31, 2012 | 39.08 | 39.31 | 38.66 | 38.90 | 14,020,605 | -0.09(-0.23%) |
| Jan 30, 2012 | 38.74 | 39.11 | 38.38 | 38.99 | 8,682,441 | -0.26(-0.66%) |
| Jan 27, 2012 | 39.27 | 39.50 | 38.98 | 39.25 | 9,588,317 | -0.10(-0.25%) |
| Jan 26, 2012 | 39.59 | 39.75 | 39.06 | 39.35 | 7,162,536 | -0.21(-0.53%) |
| Jan 25, 2012 | 39.12 | 39.68 | 38.96 | 39.56 | 10,053,948 | +0.31(+0.79%) |
| Jan 24, 2012 | 39.03 | 39.27 | 38.57 | 39.25 | 9,406,936 | +0.00(+0.00%) |
| Jan 23, 2012 | 39.38 | 39.50 | 38.96 | 39.25 | 7,124,505 | -0.06(-0.15%) |
| Jan 20, 2012 | 39.42 | 39.44 | 39.10 | 39.31 | 7,879,847 | -0.13(-0.33%) |
| Jan 19, 2012 | 39.01 | 39.47 | 39.00 | 39.44 | 7,730,979 | +0.42(+1.08%) |
| Jan 18, 2012 | 38.51 | 39.10 | 38.40 | 39.02 | 9,594,443 | +0.54(+1.40%) |
| Jan 17, 2012 | 38.69 | 38.98 | 38.41 | 38.48 | 9,142,749 | +0.08(+0.21%) |
| Jan 13, 2012 | 38.47 | 38.59 | 38.02 | 38.40 | 9,877,677 | -0.33(-0.85%) |
| Jan 12, 2012 | 38.62 | 38.86 | 38.41 | 38.73 | 10,073,374 | +0.03(+0.08%) |
| Jan 11, 2012 | 39.39 | 39.53 | 38.45 | 38.70 | 16,257,550 | -0.93(-2.35%) |
| Jan 10, 2012 | 39.48 | 39.91 | 39.16 | 39.63 | 14,071,788 | -0.12(-0.30%) |
| Jan 09, 2012 | 39.74 | 40.25 | 39.59 | 39.75 | 12,145,236 | -0.16(-0.40%) |
| Jan 06, 2012 | 39.55 | 40.15 | 39.45 | 39.91 | 14,401,542 | +0.41(+1.04%) |
| Jan 05, 2012 | 38.83 | 39.58 | 38.70 | 39.50 | 14,327,028 | +0.65(+1.67%) |
| Jan 04, 2012 | 38.19 | 38.99 | 38.12 | 38.85 | 9,889,833 | +1.35(+3.60%) |
| Dec 30, 2011 | 37.71 | 37.71 | 37.36 | 37.50 | 4,776,071 | -0.21(-0.56%) |
| Dec 29, 2011 | 37.45 | 37.80 | 37.25 | 37.71 | 5,019,866 | +0.47(+1.26%) |
| Dec 28, 2011 | 37.65 | 37.71 | 37.17 | 37.24 | 4,633,287 | -0.37(-0.98%) |
| Dec 27, 2011 | 37.61 | 37.80 | 37.40 | 37.61 | 5,189,367 | -0.09(-0.24%) |
| Dec 23, 2011 | 37.13 | 37.72 | 37.11 | 37.70 | 6,788,664 | +1.43(+3.94%) |
| Dec 21, 2011 | 36.23 | 36.70 | 35.75 | 36.27 | 8,221,402 | +0.10(+0.28%) |
| Dec 20, 2011 | 35.17 | 36.38 | 35.15 | 36.17 | 10,119,066 | +1.42(+4.09%) |
| Dec 19, 2011 | 35.39 | 35.55 | 34.51 | 34.75 | 11,436,701 | -0.57(-1.61%) |
| Dec 16, 2011 | 35.45 | 35.74 | 35.15 | 35.32 | 20,353,475 | +0.13(+0.37%) |
| Dec 15, 2011 | 35.52 | 35.72 | 34.99 | 35.19 | 9,869,250 | +0.03(+0.09%) |
| Dec 14, 2011 | 35.70 | 36.00 | 35.12 | 35.16 | 10,664,012 | -1.17(-3.22%) |
| Dec 13, 2011 | 36.69 | 37.12 | 36.18 | 36.33 | 12,708,763 | -0.32(-0.87%) |
| Dec 12, 2011 | 36.20 | 36.77 | 35.92 | 36.65 | 10,050,768 | +0.09(+0.25%) |
| Dec 09, 2011 | 36.17 | 36.77 | 36.17 | 36.56 | 7,323,389 | +0.64(+1.78%) |
| Dec 08, 2011 | 36.86 | 36.96 | 35.82 | 35.92 | 9,871,972 | -1.18(-3.18%) |
| Dec 07, 2011 | 36.71 | 37.33 | 36.46 | 37.10 | 9,543,549 | +0.27(+0.73%) |
| Dec 06, 2011 | 36.87 | 37.20 | 36.75 | 36.83 | 6,573,062 | -0.11(-0.30%) |
| Dec 05, 2011 | 37.04 | 37.37 | 36.73 | 36.94 | 9,973,469 | +0.33(+0.90%) |
| Dec 02, 2011 | 36.33 | 36.83 | 36.30 | 36.61 | 10,202,404 | +0.62(+1.72%) |