| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2016 | Q2 | 151,023 | -46,065 |
| 2016 | Q1 | 197,088 | -3,895 |
| 2015 | Q4 | 200,983 | +46,779 |
| 2015 | Q3 | 154,204 | -21,236 |
| 2015 | Q2 | 175,440 | +18,707 |
| 2015 | Q1 | 156,733 | +9,456 |
| 2014 | Q4 | 147,277 | +17,394 |
| 2014 | Q3 | 129,883 | -1,376 |
| 2014 | Q2 | 131,259 | -19,546 |
| 2014 | Q1 | 150,805 | -31,594 |
| 2013 | Q4 | 182,399 | +22,459 |
| 2013 | Q3 | 159,940 | +3,558 |
| 2013 | Q2 | 156,382 | +70,143 |
| 2013 | Q1 | 86,239 | +3,502 |
| 2012 | Q4 | 82,737 | +20,915 |
| 2012 | Q3 | 61,822 |