| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Feb 29, 2012 | 48.86 | 48.88 | 48.49 | 48.56 | 5,122,597 | -0.35(-0.72%) |
| Feb 28, 2012 | 48.23 | 48.92 | 48.16 | 48.91 | 3,826,567 | +0.68(+1.41%) |
| Feb 27, 2012 | 48.13 | 48.56 | 47.78 | 48.23 | 3,356,431 | -0.07(-0.14%) |
| Feb 24, 2012 | 48.40 | 48.70 | 48.10 | 48.30 | 3,277,218 | -0.16(-0.33%) |
| Feb 23, 2012 | 48.34 | 48.55 | 48.00 | 48.46 | 4,126,653 | +0.13(+0.27%) |
| Feb 22, 2012 | 48.29 | 48.44 | 47.87 | 48.33 | 4,324,380 | +0.07(+0.15%) |
| Feb 21, 2012 | 48.42 | 48.87 | 48.07 | 48.26 | 4,145,765 | -0.19(-0.39%) |
| Feb 17, 2012 | 48.67 | 49.02 | 48.43 | 48.45 | 6,352,895 | -0.07(-0.14%) |
| Feb 16, 2012 | 48.36 | 48.79 | 48.33 | 48.52 | 4,883,117 | +0.04(+0.08%) |
| Feb 15, 2012 | 49.05 | 49.20 | 48.41 | 48.48 | 4,045,829 | -0.64(-1.30%) |
| Feb 14, 2012 | 48.97 | 49.12 | 48.66 | 49.12 | 3,310,534 | -0.13(-0.26%) |
| Feb 13, 2012 | 49.05 | 49.27 | 48.73 | 49.25 | 3,858,250 | +0.43(+0.88%) |
| Feb 10, 2012 | 48.80 | 48.90 | 48.50 | 48.82 | 4,088,345 | -0.38(-0.77%) |
| Feb 09, 2012 | 48.86 | 49.36 | 48.76 | 49.20 | 4,755,616 | +0.48(+0.99%) |
| Feb 08, 2012 | 48.47 | 48.81 | 48.28 | 48.72 | 3,836,044 | +0.31(+0.64%) |
| Feb 07, 2012 | 48.25 | 48.60 | 48.12 | 48.41 | 3,175,806 | +0.12(+0.25%) |
| Feb 06, 2012 | 48.12 | 48.50 | 47.99 | 48.29 | 3,707,687 | -0.03(-0.06%) |
| Feb 03, 2012 | 47.97 | 48.40 | 47.94 | 48.32 | 4,999,084 | +0.66(+1.38%) |
| Feb 02, 2012 | 48.23 | 48.49 | 47.41 | 47.66 | 5,988,807 | -0.58(-1.20%) |
| Feb 01, 2012 | 48.34 | 48.43 | 47.54 | 48.24 | 8,271,727 | +0.32(+0.67%) |
| Jan 31, 2012 | 48.54 | 48.62 | 47.82 | 47.92 | 5,865,521 | -0.56(-1.16%) |
| Jan 30, 2012 | 47.37 | 48.48 | 47.25 | 48.48 | 8,198,952 | +0.63(+1.32%) |
| Jan 27, 2012 | 47.89 | 47.93 | 46.91 | 47.85 | 13,487,988 | -0.49(-1.01%) |
| Jan 26, 2012 | 48.06 | 48.49 | 47.06 | 48.34 | 12,464,239 | +0.57(+1.19%) |
| Jan 25, 2012 | 48.09 | 48.09 | 47.35 | 47.77 | 7,138,574 | +0.12(+0.25%) |
| Jan 24, 2012 | 47.26 | 47.80 | 47.04 | 47.65 | 5,154,570 | +0.31(+0.65%) |
| Jan 23, 2012 | 48.15 | 48.20 | 47.11 | 47.34 | 7,581,447 | -0.81(-1.68%) |
| Jan 20, 2012 | 47.94 | 48.39 | 47.81 | 48.15 | 4,791,178 | +0.13(+0.27%) |
| Jan 19, 2012 | 47.98 | 48.05 | 47.70 | 48.02 | 5,270,319 | -0.02(-0.04%) |
| Jan 18, 2012 | 47.86 | 48.15 | 47.62 | 48.04 | 5,609,634 | +0.33(+0.69%) |
| Jan 17, 2012 | 47.94 | 47.99 | 47.53 | 47.71 | 3,768,253 | +0.35(+0.74%) |
| Jan 13, 2012 | 47.50 | 47.60 | 46.94 | 47.36 | 4,769,247 | -0.24(-0.50%) |
| Jan 12, 2012 | 47.33 | 47.63 | 47.05 | 47.60 | 4,486,645 | +0.48(+1.02%) |
| Jan 11, 2012 | 46.64 | 47.21 | 46.47 | 47.12 | 4,100,465 | +0.30(+0.64%) |
| Jan 10, 2012 | 47.05 | 47.28 | 46.39 | 46.82 | 3,933,973 | +0.23(+0.49%) |
| Jan 09, 2012 | 46.73 | 46.80 | 46.27 | 46.59 | 3,630,772 | -0.13(-0.28%) |
| Jan 06, 2012 | 46.38 | 46.91 | 46.23 | 46.72 | 4,052,743 | +0.36(+0.78%) |
| Jan 05, 2012 | 46.19 | 46.40 | 45.55 | 46.36 | 4,865,890 | +0.19(+0.41%) |
| Jan 04, 2012 | 45.41 | 46.63 | 45.28 | 46.17 | 6,943,374 | +0.16(+0.35%) |
| Dec 30, 2011 | 46.45 | 46.49 | 46.01 | 46.01 | 2,686,491 | -0.44(-0.95%) |
| Dec 29, 2011 | 46.08 | 46.50 | 45.91 | 46.45 | 3,824,115 | +0.67(+1.46%) |
| Dec 28, 2011 | 46.32 | 46.35 | 45.41 | 45.78 | 3,914,552 | -0.16(-0.35%) |
| Dec 27, 2011 | 45.40 | 46.10 | 45.35 | 45.94 | 2,894,599 | +0.49(+1.09%) |
| Dec 23, 2011 | 45.09 | 45.45 | 44.91 | 45.45 | 2,533,863 | +0.20(+0.45%) |
| Dec 21, 2011 | 45.01 | 45.45 | 44.53 | 45.24 | 4,620,317 | +0.18(+0.40%) |
| Dec 20, 2011 | 44.13 | 45.15 | 44.10 | 45.06 | 6,499,097 | +1.44(+3.30%) |
| Dec 19, 2011 | 43.86 | 44.00 | 43.31 | 43.62 | 5,230,625 | +0.14(+0.32%) |
| Dec 16, 2011 | 43.71 | 44.08 | 43.45 | 43.48 | 6,640,561 | +0.08(+0.18%) |
| Dec 15, 2011 | 43.36 | 43.73 | 43.15 | 43.40 | 5,370,982 | +0.31(+0.72%) |
| Dec 14, 2011 | 43.39 | 43.53 | 42.67 | 43.09 | 6,193,814 | -0.52(-1.19%) |
| Dec 13, 2011 | 44.55 | 45.00 | 43.46 | 43.61 | 7,242,948 | -0.39(-0.89%) |
| Dec 12, 2011 | 43.49 | 44.06 | 43.15 | 44.00 | 4,623,018 | +0.04(+0.09%) |
| Dec 09, 2011 | 43.10 | 44.14 | 42.94 | 43.96 | 5,447,053 | +1.10(+2.57%) |
| Dec 08, 2011 | 43.45 | 43.99 | 42.78 | 42.86 | 4,939,353 | -1.02(-2.32%) |
| Dec 07, 2011 | 43.54 | 44.04 | 43.00 | 43.88 | 4,104,363 | +0.15(+0.34%) |
| Dec 06, 2011 | 44.29 | 44.30 | 43.37 | 43.73 | 4,114,148 | -0.47(-1.06%) |
| Dec 05, 2011 | 44.25 | 44.34 | 44.00 | 44.20 | 6,950,679 | +0.29(+0.66%) |
| Dec 02, 2011 | 43.95 | 44.23 | 43.56 | 43.91 | 6,105,283 | +0.32(+0.73%) |