| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
April 2011 | $10.50 | $10.62 | $9.58 | $10.47 | 9,253,829,200 |
March 2011 | $10.63 | $10.82 | $9.76 | $10.42 | 11,306,458,800 |
February 2011 | $10.21 | $10.91 | $10.10 | $10.56 | 9,295,949,600 |
January 2011 | $9.74 | $10.43 | $9.72 | $10.15 | 10,841,535,600 |
December 2010 | $9.43 | $9.77 | $9.42 | $9.65 | 6,973,234,800 |
November 2010 | $9.04 | $9.61 | $8.91 | $9.31 | 9,508,086,000 |
October 2010 | $8.56 | $9.54 | $8.31 | $9.00 | 12,234,577,600 |
September 2010 | $7.40 | $8.82 | $7.37 | $8.49 | 11,849,919,200 |
August 2010 | $7.79 | $7.90 | $7.05 | $7.27 | 9,589,120,800 |
July 2010 | $7.61 | $7.96 | $7.17 | $7.69 | 15,669,704,400 |
June 2010 | $7.77 | $8.35 | $7.24 | $7.52 | 16,651,252,800 |
May 2010 | $7.89 | $8.01 | $5.96 | $7.68 | 18,082,654,800 |
April 2010 | $7.10 | $8.15 | $6.96 | $7.81 | 12,367,129,600 |
March 2010 | $6.15 | $7.10 | $6.14 | $7.03 | 12,154,172,800 |
February 2010 | $5.75 | $6.14 | $5.71 | $6.12 | 10,776,080,000 |
January 2010 | $6.38 | $6.45 | $5.69 | $5.74 | 15,168,994,400 |
December 2009 | $6.05 | $6.40 | $5.64 | $6.30 | 11,393,958,800 |
November 2009 | $5.68 | $6.22 | $5.55 | $5.98 | 8,454,784,800 |
October 2009 | $5.54 | $6.24 | $5.40 | $5.64 | 12,956,176,800 |
September 2009 | $5.02 | $5.65 | $4.91 | $5.54 | 9,989,319,200 |
August 2009 | $4.94 | $5.16 | $4.77 | $5.03 | 8,165,124,800 |
July 2009 | $4.29 | $4.94 | $4.02 | $4.89 | 10,942,136,800 |
June 2009 | $4.08 | $4.38 | $3.97 | $4.26 | 12,675,572,000 |
May 2009 | $3.76 | $4.06 | $3.57 | $4.06 | 9,457,142,800 |
April 2009 | $3.11 | $3.80 | $3.11 | $3.76 | 11,821,681,200 |