| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2010 | $19.89 | $20.50 | $19.82 | $20.46 | 407,087,600 |
November 2010 | $18.96 | $19.97 | $18.91 | $19.65 | 440,370,400 |
October 2010 | $18.24 | $19.08 | $18.08 | $18.95 | 387,123,000 |
September 2010 | $17.29 | $18.30 | $17.26 | $18.08 | 348,528,400 |
August 2010 | $17.12 | $17.60 | $16.84 | $17.14 | 390,193,400 |
July 2010 | $15.43 | $16.96 | $15.17 | $16.90 | 373,304,800 |
June 2010 | $15.55 | $16.28 | $15.34 | $15.37 | 484,671,600 |
May 2010 | $16.33 | $16.48 | $15.19 | $15.63 | 529,041,000 |
April 2010 | $16.84 | $16.90 | $15.98 | $16.25 | 443,832,000 |
March 2010 | $16.05 | $16.84 | $15.92 | $16.73 | 535,704,600 |
February 2010 | $16.44 | $16.87 | $15.75 | $15.90 | 457,985,600 |
January 2010 | $17.24 | $17.32 | $16.20 | $16.36 | 385,386,200 |
December 2009 | $17.37 | $17.93 | $16.99 | $17.19 | 385,779,200 |
November 2009 | $16.03 | $17.50 | $15.81 | $17.25 | 327,993,600 |
October 2009 | $15.99 | $16.62 | $15.79 | $15.97 | 419,925,800 |
September 2009 | $14.47 | $16.21 | $14.37 | $16.08 | 616,148,600 |
August 2009 | $14.86 | $14.90 | $14.09 | $14.49 | 354,388,000 |
July 2009 | $14.40 | $15.16 | $14.27 | $14.81 | 432,536,800 |
June 2009 | $14.51 | $14.82 | $14.02 | $14.26 | 505,408,000 |
May 2009 | $12.71 | $14.48 | $12.42 | $14.48 | 547,907,600 |
April 2009 | $12.89 | $13.50 | $12.37 | $12.68 | 461,491,600 |
March 2009 | $11.79 | $13.31 | $10.91 | $12.95 | 623,111,400 |
February 2009 | $12.30 | $12.96 | $11.74 | $11.91 | 490,766,800 |
January 2009 | $13.23 | $13.41 | $12.11 | $12.45 | 460,252,400 |
December 2008 | $13.46 | $13.72 | $12.52 | $13.20 | 567,212,000 |