| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2011 | $17.41 | $19.00 | $17.11 | $18.72 | 600,958,300 |
November 2011 | $16.75 | $18.09 | $15.76 | $17.57 | 717,310,700 |
October 2011 | $16.26 | $18.62 | $15.29 | $17.52 | 988,797,700 |
September 2011 | $17.65 | $17.74 | $15.35 | $16.31 | 894,820,200 |
August 2011 | $19.10 | $19.14 | $15.27 | $17.65 | 1,181,099,400 |
July 2011 | $18.90 | $19.95 | $17.75 | $18.81 | 674,137,600 |
June 2011 | $19.09 | $19.09 | $17.00 | $18.89 | 894,779,600 |
May 2011 | $19.67 | $19.89 | $18.43 | $19.10 | 618,422,100 |
April 2011 | $21.51 | $21.88 | $18.91 | $19.52 | 828,884,300 |
March 2011 | $21.63 | $22.05 | $19.95 | $21.26 | 711,238,900 |
February 2011 | $21.78 | $22.91 | $20.60 | $21.58 | 707,641,800 |
January 2011 | $20.91 | $22.03 | $20.46 | $21.65 | 683,995,900 |
December 2010 | $18.42 | $21.11 | $18.17 | $20.70 | 614,774,500 |
November 2010 | $17.35 | $19.61 | $17.07 | $18.17 | 686,309,700 |
October 2010 | $16.87 | $17.72 | $15.58 | $17.37 | 1,025,608,100 |
September 2010 | $15.94 | $17.97 | $15.84 | $16.75 | 745,446,900 |
August 2010 | $18.83 | $19.02 | $15.35 | $15.70 | 811,768,100 |
July 2010 | $17.00 | $19.14 | $16.37 | $18.45 | 800,299,500 |
June 2010 | $19.08 | $19.62 | $16.98 | $17.04 | 916,736,600 |
May 2010 | $22.07 | $22.65 | $18.26 | $19.09 | 1,142,687,200 |
April 2010 | $20.86 | $22.76 | $20.68 | $22.00 | 943,549,600 |
March 2010 | $18.24 | $21.26 | $18.04 | $20.68 | 817,434,600 |
February 2010 | $18.97 | $19.32 | $17.52 | $18.17 | 840,453,900 |
January 2010 | $17.92 | $19.52 | $17.79 | $18.86 | 1,009,905,300 |
December 2009 | $18.67 | $18.83 | $16.58 | $17.90 | 1,251,545,400 |
