| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| May 31, 2012 | 18.57 | 18.64 | 18.15 | 18.50 | 2,404,414 | -0.10(-0.54%) |
| May 30, 2012 | 19.15 | 19.30 | 18.49 | 18.60 | 2,114,566 | -0.87(-4.47%) |
| May 29, 2012 | 19.30 | 19.50 | 19.07 | 19.47 | 1,451,963 | +0.28(+1.46%) |
| May 25, 2012 | 18.96 | 19.30 | 18.95 | 19.19 | 1,036,606 | +0.17(+0.89%) |
| May 24, 2012 | 19.25 | 19.37 | 18.80 | 19.02 | 1,658,912 | -0.05(-0.26%) |
| May 23, 2012 | 18.78 | 19.17 | 18.53 | 19.07 | 2,475,652 | +0.35(+1.87%) |
| May 22, 2012 | 19.06 | 19.27 | 18.58 | 18.72 | 2,300,104 | +0.04(+0.21%) |
| May 21, 2012 | 18.24 | 18.75 | 17.67 | 18.68 | 3,362,947 | +0.19(+1.03%) |
| May 18, 2012 | 18.01 | 19.00 | 17.88 | 18.49 | 4,439,960 | +0.78(+4.40%) |
| May 17, 2012 | 18.74 | 18.85 | 17.68 | 17.71 | 4,990,881 | -1.00(-5.34%) |
| May 16, 2012 | 19.21 | 19.43 | 18.62 | 18.71 | 2,949,143 | -0.43(-2.25%) |
| May 15, 2012 | 19.36 | 19.70 | 19.05 | 19.14 | 3,071,738 | -0.26(-1.34%) |
| May 14, 2012 | 19.51 | 19.91 | 19.34 | 19.40 | 1,694,604 | -0.32(-1.62%) |
| May 11, 2012 | 19.56 | 20.24 | 19.55 | 19.72 | 1,577,254 | -0.04(-0.20%) |
| May 10, 2012 | 20.07 | 20.15 | 19.50 | 19.76 | 3,366,374 | -0.08(-0.40%) |
| May 09, 2012 | 19.68 | 19.97 | 19.33 | 19.84 | 2,166,764 | -0.13(-0.65%) |
| May 08, 2012 | 20.47 | 20.47 | 19.45 | 19.97 | 3,156,828 | -0.72(-3.48%) |
| May 07, 2012 | 21.31 | 21.56 | 20.68 | 20.69 | 2,950,312 | -0.70(-3.27%) |
| May 04, 2012 | 21.80 | 21.96 | 21.03 | 21.39 | 2,722,626 | -0.52(-2.37%) |
| May 03, 2012 | 21.98 | 22.82 | 21.22 | 21.91 | 7,099,676 | -0.85(-3.73%) |
| May 02, 2012 | 22.29 | 22.86 | 21.77 | 22.76 | 4,597,565 | +0.95(+4.36%) |
| May 01, 2012 | 22.16 | 22.52 | 21.79 | 21.81 | 2,533,494 | -0.37(-1.67%) |
| Apr 30, 2012 | 22.93 | 22.96 | 21.64 | 22.18 | 3,074,579 | -0.87(-3.77%) |
| Apr 27, 2012 | 22.54 | 23.05 | 22.15 | 23.05 | 2,497,213 | +0.57(+2.54%) |
| Apr 26, 2012 | 22.18 | 22.70 | 21.97 | 22.48 | 1,461,732 | +0.32(+1.44%) |
| Apr 25, 2012 | 21.91 | 22.23 | 21.70 | 22.16 | 2,510,487 | +0.90(+4.23%) |
| Apr 24, 2012 | 21.34 | 21.62 | 20.84 | 21.26 | 1,526,190 | -0.14(-0.65%) |
| Apr 23, 2012 | 21.40 | 21.44 | 21.08 | 21.40 | 1,374,167 | -0.33(-1.52%) |
| Apr 20, 2012 | 21.87 | 22.00 | 21.54 | 21.73 | 2,458,162 | +0.09(+0.42%) |
| Apr 19, 2012 | 21.70 | 21.97 | 21.34 | 21.64 | 2,309,483 | -0.17(-0.78%) |
| Apr 18, 2012 | 21.20 | 21.93 | 21.17 | 21.81 | 2,534,766 | +0.46(+2.15%) |
| Apr 17, 2012 | 21.25 | 21.57 | 21.18 | 21.35 | 1,571,452 | +0.26(+1.23%) |
| Apr 16, 2012 | 21.25 | 21.40 | 20.68 | 21.09 | 1,855,008 | -0.01(-0.05%) |
| Apr 13, 2012 | 21.00 | 21.20 | 20.67 | 21.10 | 2,060,341 | +0.06(+0.29%) |
| Apr 12, 2012 | 20.58 | 21.19 | 20.53 | 21.04 | 1,591,421 | +0.42(+2.04%) |
| Apr 11, 2012 | 20.69 | 20.85 | 20.50 | 20.62 | 2,700,370 | +0.18(+0.88%) |
| Apr 10, 2012 | 21.39 | 21.39 | 20.14 | 20.44 | 2,715,750 | -0.97(-4.53%) |
| Apr 09, 2012 | 21.28 | 21.50 | 21.01 | 21.41 | 2,104,282 | -0.19(-0.88%) |
| Apr 05, 2012 | 21.73 | 21.89 | 21.49 | 21.60 | 2,620,005 | -0.31(-1.41%) |
| Apr 04, 2012 | 22.17 | 22.28 | 21.64 | 21.91 | 1,914,512 | -0.44(-1.97%) |
| Apr 03, 2012 | 21.87 | 22.70 | 21.87 | 22.35 | 3,066,689 | +0.35(+1.59%) |
| Apr 02, 2012 | 21.62 | 22.26 | 21.58 | 22.00 | 2,362,712 | +0.38(+1.76%) |
| Mar 30, 2012 | 21.94 | 22.04 | 21.20 | 21.62 | 1,554,993 | -0.24(-1.10%) |
| Mar 29, 2012 | 21.87 | 22.03 | 21.54 | 21.86 | 1,609,000 | -0.15(-0.68%) |
| Mar 28, 2012 | 22.10 | 22.19 | 21.62 | 22.01 | 2,682,542 | +0.46(+2.13%) |
| Mar 27, 2012 | 21.70 | 21.87 | 21.47 | 21.55 | 2,124,697 | -0.18(-0.83%) |
| Mar 26, 2012 | 21.28 | 21.83 | 21.08 | 21.73 | 2,365,830 | +0.58(+2.74%) |
| Mar 23, 2012 | 20.65 | 21.19 | 20.18 | 21.15 | 1,992,776 | +0.44(+2.12%) |
| Mar 22, 2012 | 20.57 | 20.95 | 20.44 | 20.71 | 1,192,732 | -0.05(-0.24%) |
| Mar 21, 2012 | 20.86 | 20.88 | 20.60 | 20.76 | 1,497,752 | -0.02(-0.10%) |
| Mar 20, 2012 | 20.12 | 20.95 | 20.04 | 20.78 | 1,901,471 | +0.49(+2.41%) |
| Mar 19, 2012 | 20.34 | 20.58 | 20.14 | 20.29 | 1,860,148 | -0.13(-0.64%) |
| Mar 16, 2012 | 21.33 | 21.33 | 20.42 | 20.42 | 2,896,228 | -0.91(-4.27%) |
| Mar 15, 2012 | 20.41 | 21.40 | 20.34 | 21.33 | 2,987,404 | +0.88(+4.30%) |
| Mar 14, 2012 | 20.33 | 20.51 | 20.05 | 20.45 | 2,420,553 | +0.12(+0.59%) |
| Mar 13, 2012 | 20.00 | 20.33 | 19.69 | 20.33 | 2,927,150 | +0.40(+2.01%) |
| Mar 12, 2012 | 19.55 | 19.95 | 19.43 | 19.93 | 2,179,628 | +0.38(+1.94%) |
| Mar 09, 2012 | 19.20 | 19.74 | 19.16 | 19.55 | 4,814,414 | +0.60(+3.17%) |
| Mar 08, 2012 | 19.23 | 19.44 | 18.89 | 18.95 | 3,292,098 | -0.09(-0.47%) |
| Mar 07, 2012 | 18.47 | 19.04 | 18.31 | 19.04 | 3,559,774 | +0.88(+4.85%) |
| Mar 06, 2012 | 18.46 | 18.58 | 17.94 | 18.16 | 2,039,504 | -0.47(-2.52%) |
| Mar 05, 2012 | 18.13 | 18.65 | 17.86 | 18.63 | 3,467,325 | +0.52(+2.87%) |
| Mar 02, 2012 | 18.42 | 18.50 | 17.95 | 18.11 | 2,176,651 | -0.28(-1.52%) |