| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q3 | 105,659 | -147,457 |
| 2015 | Q2 | 253,116 | +11,467 |
| 2015 | Q1 | 241,649 | -16,623 |
| 2014 | Q4 | 258,272 | -23,865 |
| 2014 | Q3 | 282,137 | +17,171 |
| 2014 | Q2 | 264,966 | -24,171 |
| 2014 | Q1 | 289,137 | +17,101 |
| 2013 | Q4 | 272,036 | +31,450 |
| 2013 | Q3 | 240,586 | -17,430 |
| 2013 | Q2 | 258,016 | -33,309 |
| 2013 | Q1 | 291,325 | -53,868 |
| 2012 | Q4 | 345,193 | +14,059 |
| 2012 | Q3 | 331,134 | -154,531 |
| 2012 | Q2 | 485,665 | +144,207 |
| 2012 | Q1 | 341,458 | -116,862 |
| 2011 | Q4 | 458,320 |