| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2011 | $17.23 | $18.81 | $16.94 | $18.54 | 600,958,300 |
November 2011 | $16.59 | $17.91 | $15.60 | $17.39 | 717,310,700 |
October 2011 | $16.10 | $18.43 | $15.13 | $17.34 | 988,797,700 |
September 2011 | $17.48 | $17.56 | $15.19 | $16.14 | 894,820,200 |
August 2011 | $18.90 | $18.95 | $15.11 | $17.47 | 1,181,099,400 |
July 2011 | $18.71 | $19.74 | $17.57 | $18.62 | 674,137,600 |
June 2011 | $18.90 | $18.90 | $16.83 | $18.70 | 894,779,600 |
May 2011 | $19.47 | $19.69 | $18.24 | $18.90 | 618,422,100 |
April 2011 | $21.30 | $21.65 | $18.72 | $19.32 | 828,884,300 |
March 2011 | $21.41 | $21.83 | $19.75 | $21.04 | 711,238,900 |
February 2011 | $21.56 | $22.68 | $20.39 | $21.36 | 707,641,800 |
January 2011 | $20.69 | $21.81 | $20.26 | $21.44 | 683,995,900 |
December 2010 | $18.24 | $20.90 | $17.98 | $20.49 | 614,774,500 |
November 2010 | $17.18 | $19.41 | $16.89 | $17.99 | 686,309,700 |
October 2010 | $16.70 | $17.54 | $15.42 | $17.20 | 1,025,608,100 |
September 2010 | $15.78 | $17.79 | $15.68 | $16.58 | 745,446,900 |
August 2010 | $18.64 | $18.83 | $15.19 | $15.54 | 811,768,100 |
July 2010 | $16.82 | $18.95 | $16.20 | $18.27 | 800,299,500 |
June 2010 | $18.89 | $19.42 | $16.81 | $16.86 | 916,736,600 |
May 2010 | $21.85 | $22.42 | $18.08 | $18.90 | 1,142,687,200 |
April 2010 | $20.65 | $22.53 | $20.47 | $21.78 | 943,549,600 |
March 2010 | $18.05 | $21.04 | $17.86 | $20.47 | 817,434,600 |
February 2010 | $18.78 | $19.13 | $17.34 | $17.98 | 840,453,900 |
January 2010 | $17.74 | $19.32 | $17.61 | $18.67 | 1,009,905,300 |
December 2009 | $18.48 | $18.64 | $16.41 | $17.72 | 1,251,545,400 |
