| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q2 | 497,439 | +131,931 |
| 2015 | Q1 | 365,508 | -23,234 |
| 2014 | Q4 | 388,742 | +104,868 |
| 2014 | Q3 | 283,874 | -8,471 |
| 2014 | Q2 | 292,345 | +53,318 |
| 2014 | Q1 | 239,027 | -39,043 |
| 2013 | Q4 | 278,070 | +23,717 |
| 2013 | Q3 | 254,353 | -41,897 |
| 2013 | Q2 | 296,250 | +56,503 |
| 2013 | Q1 | 239,747 | +27,154 |
| 2012 | Q4 | 212,593 | -21,557 |
| 2012 | Q3 | 234,150 |