| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2011 | $21.09 | $23.36 | $20.52 | $22.72 | 818,108,000 |
November 2011 | $22.19 | $24.04 | $19.32 | $21.16 | 836,433,900 |
October 2011 | $20.34 | $25.65 | $19.03 | $23.75 | 1,065,099,100 |
September 2011 | $25.48 | $25.62 | $19.33 | $20.40 | 1,031,994,300 |
August 2011 | $27.88 | $28.02 | $21.89 | $25.44 | 1,190,346,900 |
July 2011 | $27.64 | $28.82 | $26.37 | $27.40 | 666,695,700 |
June 2011 | $28.86 | $28.94 | $26.42 | $27.56 | 807,200,100 |
May 2011 | $30.93 | $31.02 | $28.07 | $29.11 | 586,460,300 |
April 2011 | $31.17 | $32.18 | $29.31 | $30.72 | 577,996,200 |
March 2011 | $31.12 | $31.54 | $29.06 | $30.87 | 684,643,600 |
February 2011 | $30.27 | $32.38 | $29.66 | $31.26 | 597,586,300 |
January 2011 | $28.76 | $30.76 | $28.56 | $30.09 | 827,482,200 |
December 2010 | $25.38 | $28.84 | $25.18 | $28.37 | 665,999,200 |
November 2010 | $25.16 | $27.65 | $24.63 | $25.01 | 760,406,300 |
October 2010 | $25.61 | $27.24 | $24.22 | $25.17 | 949,249,000 |
September 2010 | $24.54 | $27.72 | $24.49 | $25.42 | 717,143,800 |
August 2010 | $27.37 | $27.85 | $23.75 | $24.29 | 723,429,400 |
July 2010 | $24.41 | $27.55 | $23.49 | $26.91 | 832,405,700 |
June 2010 | $26.23 | $26.66 | $24.35 | $24.42 | 975,653,600 |
May 2010 | $28.66 | $29.17 | $24.70 | $26.40 | 1,137,332,300 |
April 2010 | $30.04 | $32.15 | $28.17 | $28.40 | 947,688,500 |
March 2010 | $28.01 | $30.68 | $27.55 | $29.82 | 755,522,200 |
February 2010 | $26.05 | $28.19 | $24.67 | $27.97 | 876,257,200 |
January 2010 | $27.85 | $30.11 | $25.37 | $25.95 | 1,029,066,400 |
December 2009 | $28.36 | $28.68 | $26.65 | $27.73 | 755,880,700 |
