| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2018 | Q3 | 6,579 | +377 |
| 2018 | Q2 | 6,202 | +448 |
| 2018 | Q1 | 5,754 | +384 |
| 2017 | Q4 | 5,370 | -396 |
| 2017 | Q3 | 5,766 | +258 |
| 2017 | Q2 | 5,508 | +217 |
| 2017 | Q1 | 5,291 | |
| 2016 | Q4 | 5,291 | -1,904 |
| 2016 | Q3 | 7,195 | +27 |
| 2016 | Q2 | 7,168 | -2,392 |
| 2016 | Q1 | 9,560 | +54 |
| 2015 | Q4 | 9,506 | -637 |
| 2015 | Q3 | 10,143 | +1,296 |
| 2015 | Q2 | 8,847 | +1,127 |
| 2015 | Q1 | 7,720 | -552 |
| 2014 | Q4 | 8,272 | +344 |
| 2014 | Q3 | 7,928 | +736 |
| 2014 | Q2 | 7,192 | +1,109 |
| 2014 | Q1 | 6,083 | +1,262 |
| 2013 | Q4 | 4,821 | +1,350 |
| 2013 | Q3 | 3,471 | +1,839 |
| 2013 | Q2 | 1,632 |