
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 2011 | $20.00 | $20.49 | $19.69 | $20.31 | 1,007,182,089 |
November 2011 | $20.34 | $21.12 | $19.01 | $20.01 | 1,046,244,355 |
October 2011 | $19.20 | $21.36 | $18.84 | $20.68 | 1,218,183,060 |
September 2011 | $20.55 | $21.36 | $19.10 | $19.33 | 1,279,992,373 |
August 2011 | $21.23 | $21.36 | $18.47 | $20.66 | 1,719,389,997 |
July 2011 | $20.01 | $21.72 | $19.94 | $21.14 | 1,259,395,480 |
June 2011 | $19.28 | $20.06 | $18.25 | $20.06 | 1,297,830,116 |
May 2011 | $19.89 | $20.12 | $18.54 | $19.30 | 1,364,179,093 |
April 2011 | $19.57 | $20.60 | $18.95 | $19.87 | 1,313,887,199 |
March 2011 | $20.39 | $20.53 | $18.92 | $19.47 | 1,311,032,085 |
February 2011 | $21.19 | $21.60 | $20.26 | $20.38 | 1,114,409,237 |
January 2011 | $21.38 | $22.45 | $20.90 | $21.13 | 1,361,327,166 |