| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Feb 28, 2011 | 55.51 | 56.01 | 55.39 | 55.82 | 4,103,804 | +0.26(+0.47%) |
| Feb 25, 2011 | 55.44 | 55.79 | 55.18 | 55.56 | 2,174,786 | +0.23(+0.42%) |
| Feb 24, 2011 | 54.43 | 55.80 | 54.43 | 55.33 | 3,076,022 | +0.36(+0.65%) |
| Feb 23, 2011 | 56.18 | 56.20 | 54.94 | 54.97 | 2,233,959 | -1.18(-2.10%) |
| Feb 22, 2011 | 57.10 | 57.27 | 56.02 | 56.15 | 2,533,953 | -1.53(-2.65%) |
| Feb 18, 2011 | 57.42 | 58.01 | 57.36 | 57.68 | 2,245,850 | +0.48(+0.84%) |
| Feb 17, 2011 | 55.22 | 57.31 | 54.89 | 57.20 | 2,311,444 | +0.03(+0.05%) |
| Feb 16, 2011 | 56.69 | 57.66 | 56.51 | 57.17 | 1,875,514 | +0.55(+0.97%) |
| Feb 15, 2011 | 57.17 | 57.23 | 56.39 | 56.62 | 1,820,212 | -0.53(-0.93%) |
| Feb 14, 2011 | 57.33 | 57.74 | 57.07 | 57.15 | 2,514,347 | -0.70(-1.21%) |
| Feb 11, 2011 | 56.92 | 57.93 | 56.74 | 57.85 | 1,910,295 | +0.85(+1.49%) |
| Feb 10, 2011 | 56.82 | 57.14 | 56.72 | 57.00 | 2,154,789 | +0.05(+0.09%) |
| Feb 09, 2011 | 55.88 | 56.96 | 55.82 | 56.95 | 3,114,320 | +1.07(+1.91%) |
| Feb 08, 2011 | 55.92 | 56.13 | 55.50 | 55.88 | 2,341,942 | -0.15(-0.27%) |
| Feb 07, 2011 | 56.09 | 56.17 | 55.35 | 56.03 | 2,866,485 | +0.07(+0.13%) |
| Feb 04, 2011 | 56.08 | 56.18 | 55.20 | 55.96 | 2,734,675 | +0.01(+0.02%) |
| Feb 03, 2011 | 55.83 | 56.23 | 55.23 | 55.95 | 2,597,388 | -0.11(-0.20%) |
| Feb 02, 2011 | 56.49 | 56.91 | 55.77 | 56.06 | 4,128,937 | -1.35(-2.35%) |
| Feb 01, 2011 | 57.51 | 58.16 | 56.91 | 57.41 | 3,800,008 | +0.14(+0.24%) |
| Jan 31, 2011 | 56.80 | 57.32 | 56.63 | 57.27 | 1,992,490 | +0.26(+0.46%) |
| Jan 28, 2011 | 57.77 | 58.09 | 56.73 | 57.01 | 2,879,398 | -0.84(-1.45%) |
| Jan 27, 2011 | 57.63 | 57.95 | 57.42 | 57.85 | 2,320,189 | +0.28(+0.49%) |
| Jan 26, 2011 | 57.04 | 57.73 | 56.87 | 57.57 | 3,227,973 | +0.66(+1.16%) |
| Jan 25, 2011 | 56.22 | 57.10 | 56.09 | 56.91 | 2,456,266 | +0.55(+0.98%) |
| Jan 24, 2011 | 55.67 | 56.71 | 55.58 | 56.36 | 2,030,931 | +0.85(+1.53%) |
| Jan 21, 2011 | 55.70 | 56.10 | 55.39 | 55.51 | 2,068,753 | +0.22(+0.40%) |
| Jan 20, 2011 | 55.71 | 55.95 | 54.80 | 55.29 | 3,452,340 | -0.79(-1.41%) |
| Jan 19, 2011 | 56.61 | 56.75 | 55.72 | 56.08 | 2,214,360 | -0.75(-1.32%) |
| Jan 18, 2011 | 56.53 | 57.05 | 56.53 | 56.83 | 3,021,492 | +0.18(+0.32%) |
| Jan 14, 2011 | 56.31 | 56.68 | 55.87 | 56.65 | 2,409,705 | +0.11(+0.19%) |
| Jan 13, 2011 | 56.58 | 56.84 | 56.28 | 56.54 | 1,689,037 | -0.10(-0.18%) |
| Jan 12, 2011 | 56.48 | 56.92 | 56.29 | 56.64 | 2,129,978 | +0.58(+1.03%) |
| Jan 11, 2011 | 56.45 | 56.86 | 55.95 | 56.06 | 2,374,053 | -0.08(-0.14%) |
| Jan 10, 2011 | 56.01 | 56.63 | 55.83 | 56.14 | 1,882,691 | -0.23(-0.41%) |
| Jan 07, 2011 | 56.50 | 56.58 | 56.00 | 56.37 | 1,599,835 | -0.21(-0.37%) |
| Jan 06, 2011 | 56.72 | 56.80 | 56.34 | 56.58 | 2,355,017 | +0.06(+0.11%) |
| Jan 05, 2011 | 56.41 | 56.62 | 56.07 | 56.52 | 2,665,378 | -0.20(-0.35%) |
| Jan 04, 2011 | 56.51 | 56.79 | 56.21 | 56.72 | 3,109,007 | +0.24(+0.42%) |
| Jan 03, 2011 | 55.64 | 56.53 | 55.57 | 56.48 | 2,416,308 | +1.12(+2.02%) |
| Dec 31, 2010 | 55.62 | 55.63 | 55.25 | 55.36 | 901,588 | -0.31(-0.56%) |
| Dec 30, 2010 | 55.52 | 55.79 | 55.35 | 55.67 | 1,055,006 | -0.07(-0.13%) |
| Dec 29, 2010 | 55.37 | 56.00 | 55.14 | 55.74 | 1,377,567 | +0.55(+1.00%) |
| Dec 28, 2010 | 55.86 | 55.90 | 55.19 | 55.19 | 1,721,817 | -0.63(-1.13%) |
| Dec 27, 2010 | 55.69 | 56.12 | 55.23 | 55.82 | 971,834 | +0.05(+0.09%) |
| Dec 23, 2010 | 55.29 | 55.79 | 55.29 | 55.77 | 1,271,629 | +0.23(+0.41%) |
| Dec 22, 2010 | 55.47 | 55.65 | 55.31 | 55.54 | 1,326,421 | +0.01(+0.02%) |
| Dec 21, 2010 | 55.60 | 55.75 | 55.31 | 55.53 | 1,130,468 | -0.01(-0.02%) |
| Dec 20, 2010 | 55.65 | 55.74 | 55.10 | 55.54 | 2,959,026 | -0.24(-0.43%) |
| Dec 17, 2010 | 55.29 | 55.88 | 54.75 | 55.78 | 3,866,237 | +0.41(+0.74%) |
| Dec 16, 2010 | 55.35 | 55.43 | 54.83 | 55.37 | 2,738,360 | +0.00(+0.00%) |
| Dec 15, 2010 | 54.71 | 56.21 | 54.17 | 55.37 | 4,144,196 | +0.26(+0.47%) |
| Dec 14, 2010 | 55.92 | 56.25 | 55.06 | 55.11 | 3,314,013 | -0.45(-0.81%) |
| Dec 13, 2010 | 54.97 | 55.72 | 54.31 | 55.56 | 8,187,003 | +2.52(+4.75%) |
| Dec 10, 2010 | 52.56 | 53.30 | 52.09 | 53.04 | 2,373,640 | +1.01(+1.94%) |
| Dec 09, 2010 | 52.23 | 52.27 | 51.50 | 52.03 | 3,021,652 | -0.07(-0.13%) |
| Dec 08, 2010 | 52.33 | 52.50 | 51.77 | 52.10 | 1,538,499 | -0.23(-0.44%) |
| Dec 07, 2010 | 52.82 | 52.94 | 52.23 | 52.33 | 1,776,482 | -0.12(-0.23%) |
| Dec 06, 2010 | 52.70 | 52.75 | 52.21 | 52.45 | 1,530,946 | -0.40(-0.76%) |
| Dec 03, 2010 | 52.22 | 52.88 | 52.05 | 52.85 | 2,322,707 | +0.35(+0.67%) |
| Dec 02, 2010 | 51.52 | 52.61 | 51.38 | 52.50 | 2,093,388 | +0.95(+1.84%) |