| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2010 | $19.42 | $21.57 | $19.42 | $21.20 | 1,033,710,000 |
November 2010 | $20.29 | $21.80 | $18.94 | $19.19 | 1,361,176,300 |
October 2010 | $18.70 | $20.54 | $17.95 | $20.14 | 1,281,432,800 |
September 2010 | $17.87 | $19.28 | $17.77 | $18.49 | 1,273,139,500 |
August 2010 | $19.52 | $19.81 | $17.61 | $17.72 | 1,279,372,100 |
July 2010 | $17.34 | $19.83 | $17.07 | $19.38 | 1,408,590,600 |
June 2010 | $19.17 | $20.22 | $17.24 | $17.28 | 1,671,811,600 |
May 2010 | $22.93 | $23.22 | $18.44 | $19.38 | 1,720,130,200 |
April 2010 | $21.94 | $23.61 | $21.40 | $22.83 | 1,319,029,500 |
March 2010 | $21.51 | $22.86 | $21.11 | $21.90 | 1,110,237,200 |
February 2010 | $21.13 | $21.70 | $20.52 | $21.43 | 1,074,643,300 |
January 2010 | $22.79 | $23.25 | $20.58 | $20.97 | 1,359,650,900 |
December 2009 | $21.97 | $23.44 | $21.77 | $22.68 | 920,605,500 |
November 2009 | $20.52 | $22.43 | $20.31 | $21.89 | 1,018,256,700 |
October 2009 | $18.83 | $21.74 | $18.10 | $20.54 | 1,523,430,100 |
September 2009 | $18.04 | $19.45 | $17.60 | $19.06 | 1,038,979,700 |
August 2009 | $17.55 | $18.89 | $16.97 | $18.26 | 993,250,400 |
July 2009 | $17.72 | $18.95 | $16.21 | $17.33 | 1,517,459,800 |
June 2009 | $15.47 | $17.93 | $15.37 | $17.51 | 1,411,144,700 |
May 2009 | $14.78 | $15.43 | $13.92 | $15.39 | 1,101,122,400 |
April 2009 | $13.35 | $15.52 | $13.31 | $14.83 | 1,562,400,700 |
March 2009 | $11.68 | $13.82 | $10.89 | $13.45 | 1,625,752,800 |
February 2009 | $12.38 | $14.49 | $11.79 | $11.82 | 1,456,213,400 |
January 2009 | $14.20 | $15.27 | $12.18 | $12.43 | 1,564,043,400 |
December 2008 | $14.45 | $15.45 | $13.43 | $14.13 | 1,546,943,400 |