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Historical Prices

Date Open High Low Close Volume Change (%)
May 24, 2011 20.53 20.67 19.11 19.14 1,768,935 -1.32(-6.45%)
May 23, 2011 20.84 20.84 20.24 20.46 664,819 -0.81(-3.81%)
May 20, 2011 21.86 22.01 21.23 21.27 509,289 -0.65(-2.97%)
May 19, 2011 21.99 22.19 21.71 21.92 597,701 +0.05(+0.23%)
May 18, 2011 21.39 21.88 21.24 21.87 909,926 +0.57(+2.68%)
May 17, 2011 21.01 21.63 20.89 21.30 967,536 +0.21(+1.00%)
May 16, 2011 21.10 21.53 20.87 21.09 1,077,479 -0.11(-0.52%)
May 13, 2011 21.59 21.81 21.12 21.20 475,741 -0.35(-1.62%)
May 12, 2011 21.18 21.90 20.97 21.55 568,031 +0.18(+0.84%)
May 11, 2011 21.86 21.86 21.20 21.37 697,250 -0.53(-2.42%)
May 10, 2011 21.77 22.09 21.71 21.90 984,138 +0.20(+0.92%)
May 09, 2011 20.96 21.82 20.64 21.70 1,074,898 +0.77(+3.68%)
May 06, 2011 20.97 21.65 20.78 20.93 739,288 +0.27(+1.31%)
May 05, 2011 20.12 21.50 19.84 20.66 1,521,295 -0.33(-1.57%)
May 04, 2011 21.48 21.48 20.73 20.99 730,555 -0.56(-2.60%)
May 03, 2011 21.79 21.93 21.15 21.55 968,602 -0.38(-1.73%)
May 02, 2011 21.90 21.94 21.79 21.93 833,766 -0.75(-3.31%)
Apr 29, 2011 22.65 22.80 22.39 22.68 741,162 +0.09(+0.40%)
Apr 28, 2011 22.28 22.63 22.06 22.59 1,302,218 +0.33(+1.48%)
Apr 27, 2011 22.58 22.65 22.08 22.26 1,039,697 -0.30(-1.33%)
Apr 26, 2011 23.17 23.17 22.47 22.56 1,129,903 -0.43(-1.87%)
Apr 25, 2011 22.70 23.03 22.42 22.99 2,477,424 +0.40(+1.77%)
Apr 21, 2011 21.63 22.86 21.45 22.59 2,640,023 +1.19(+5.56%)
Apr 20, 2011 21.03 21.40 20.98 21.40 1,010,733 +0.73(+3.53%)
Apr 19, 2011 20.35 20.67 20.33 20.67 630,547 +0.45(+2.23%)
Apr 18, 2011 20.19 20.31 19.68 20.22 621,350 -0.40(-1.94%)
Apr 15, 2011 19.99 20.71 19.99 20.62 1,006,032 +1.13(+5.80%)
Apr 14, 2011 19.70 19.91 19.38 19.49 763,104 -0.31(-1.57%)
Apr 13, 2011 20.49 20.66 19.75 19.80 843,627 -0.55(-2.70%)
Apr 12, 2011 20.25 20.60 19.94 20.35 828,771 -0.08(-0.39%)
Apr 11, 2011 21.19 21.19 20.05 20.43 1,431,973 -0.78(-3.68%)
Apr 08, 2011 21.50 21.54 20.70 21.21 723,600 -0.08(-0.38%)
Apr 07, 2011 21.85 21.99 21.25 21.29 863,537 -0.49(-2.25%)
Apr 06, 2011 21.85 21.95 21.64 21.78 935,205 +0.02(+0.09%)
Apr 05, 2011 21.76 21.92 21.52 21.76 843,303 -0.07(-0.32%)
Apr 04, 2011 21.90 21.94 21.37 21.83 1,319,820 +0.84(+4.00%)
Apr 01, 2011 20.85 21.25 20.59 20.99 923,911 +0.19(+0.91%)
Mar 31, 2011 20.80 20.91 20.53 20.80 476,976 -0.05(-0.24%)
Mar 30, 2011 20.85 20.86 20.83 20.85 857,818 +0.49(+2.41%)
Mar 29, 2011 20.04 20.40 19.94 20.36 799,359 +0.34(+1.70%)
Mar 28, 2011 20.74 20.74 19.85 20.02 689,609 -0.61(-2.96%)
Mar 25, 2011 20.46 20.75 20.35 20.63 714,525 +0.19(+0.93%)
Mar 24, 2011 20.36 20.56 20.06 20.44 414,449 +0.27(+1.34%)
Mar 23, 2011 20.26 20.34 19.86 20.17 887,802 -0.09(-0.44%)
Mar 22, 2011 20.81 20.96 20.21 20.26 1,034,136 -0.49(-2.36%)
Mar 21, 2011 20.51 20.98 20.49 20.75 1,332,426 +0.96(+4.85%)
Mar 18, 2011 19.42 19.85 19.24 19.79 883,811 +0.37(+1.91%)
Mar 17, 2011 19.10 19.56 18.97 19.42 818,043 +0.69(+3.68%)
Mar 16, 2011 19.31 19.40 18.51 18.73 1,028,530 -0.67(-3.45%)
Mar 15, 2011 19.23 19.59 19.15 19.40 1,145,458 -0.50(-2.51%)
Mar 14, 2011 19.49 20.13 19.06 19.90 1,709,851 -0.20(-1.00%)
Mar 11, 2011 19.18 20.14 18.96 20.10 1,321,499 +0.94(+4.91%)
Mar 10, 2011 19.62 19.62 18.93 19.16 904,357 -0.69(-3.48%)
Mar 09, 2011 19.95 19.98 19.59 19.85 783,422 -0.11(-0.55%)
Mar 08, 2011 19.44 20.00 19.05 19.96 1,060,096 +0.55(+2.83%)
Mar 07, 2011 20.34 21.16 19.05 19.41 2,105,518 +0.44(+2.32%)
Mar 04, 2011 18.85 19.00 18.61 18.97 580,976 +0.14(+0.74%)
Mar 03, 2011 18.79 19.07 18.68 18.83 995,433 +0.23(+1.24%)
Mar 02, 2011 18.29 18.74 18.26 18.60 907,829 +0.30(+1.64%)
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