| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q2 | 81,175 | -10,414 |
| 2015 | Q1 | 91,589 | +9,687 |
| 2014 | Q4 | 81,902 | +7,484 |
| 2014 | Q3 | 74,418 | -31,613 |
| 2014 | Q2 | 106,031 | -1,787 |
| 2014 | Q1 | 107,818 | +45,032 |
| 2013 | Q4 | 62,786 | +3,337 |
| 2013 | Q3 | 59,449 | -2,181 |
| 2013 | Q2 | 61,630 | -6,873 |
| 2013 | Q1 | 68,503 | -48,803 |
| 2012 | Q4 | 117,306 | -48,967 |
| 2012 | Q3 | 166,273 | -1,151 |
| 2012 | Q2 | 167,424 | +45,826 |
| 2012 | Q1 | 121,598 | +31,809 |
| 2011 | Q4 | 89,789 | +4,019 |
| 2011 | Q3 | 85,770 | -9,987 |
| 2011 | Q2 | 95,757 | -26,750 |
| 2011 | Q1 | 122,507 |