| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2012 | Q3 | 2,576,574 | -1,111,000 |
| 2012 | Q2 | 3,687,574 | -2,290,056 |
| 2012 | Q1 | 5,977,630 | -314,157 |
| 2011 | Q4 | 6,291,787 | -330,248 |
| 2011 | Q3 | 6,622,035 | -5,696 |
| 2011 | Q2 | 6,627,731 | +491,552 |
| 2011 | Q1 | 6,136,179 | -69,810 |
| 2010 | Q4 | 6,205,989 | -46,541 |
| 2010 | Q3 | 6,252,530 |