
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME | 
|---|---|---|---|---|---|
December 31 2010     | $20.61     | $20.81     | $20.56     | $20.66     | 3,826,550     | 
December 30 2010     | $20.74     | $20.84     | $20.61     | $20.63     | 7,650,780     | 
December 29 2010     | $20.69     | $20.85     | $20.62     | $20.79     | 6,483,000     | 
December 28 2010     | $20.74     | $20.90     | $20.57     | $20.70     | 9,293,040     | 
December 27 2010     | $20.13     | $20.76     | $20.06     | $20.71     | 14,669,520     | 
December 23 2010     | $20.03     | $20.14     | $19.98     | $20.13     | 12,984,460     | 
December 22 2010     | $20.25     | $20.42     | $19.86     | $20.04     | 24,423,760     | 
December 21 2010     | $20.72     | $20.84     | $20.14     | $20.26     | 32,116,340     | 
December 20 2010     | $20.40     | $20.73     | $20.38     | $20.61     | 27,406,720     | 
December 17 2010     | $20.67     | $20.76     | $19.82     | $20.40     | 63,475,419     | 
December 16 2010     | $23.05     | $23.42     | $20.13     | $20.60     | 90,638,309     | 
December 15 2010     | $23.51     | $23.60     | $22.85     | $22.98     | 12,592,670     | 
December 14 2010     | $23.93     | $23.97     | $23.39     | $23.43     | 7,178,880     | 
December 13 2010     | $23.47     | $24.04     | $23.28     | $23.91     | 13,835,860     | 
December 10 2010     | $23.19     | $23.49     | $23.08     | $23.49     | 8,104,010     | 
December 09 2010     | $23.09     | $23.43     | $22.75     | $23.16     | 7,740,180     | 
December 08 2010     | $22.74     | $23.12     | $22.70     | $23.11     | 8,361,870     | 
December 07 2010     | $23.46     | $23.57     | $22.73     | $22.75     | 8,388,690     | 
December 06 2010     | $22.79     | $23.38     | $22.79     | $23.34     | 7,608,420     | 
December 03 2010     | $22.86     | $22.99     | $22.60     | $22.96     | 7,641,130     | 
December 02 2010     | $22.87     | $22.97     | $22.61     | $22.97     | 10,801,520     | 
December 01 2010     | $22.30     | $23.05     | $22.19     | $22.88     | 14,104,900     | 
November 30 2010     | $21.55     | $21.99     | $21.48     | $21.85     | 15,647,730     | 
November 29 2010     | $21.66     | $21.76     | $21.20     | $21.72     | 8,735,190     | 
November 26 2010     | $21.84     | $21.84     | $21.48     | $21.68     | 7,352,320     |