| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2016 | Q2 | 372,298 | +174,669 |
| 2016 | Q1 | 197,629 | -19,600 |
| 2015 | Q4 | 217,229 | +25,242 |
| 2015 | Q3 | 191,987 | -194,512 |
| 2015 | Q2 | 386,499 | +30,112 |
| 2015 | Q1 | 356,387 | -41,148 |
| 2014 | Q4 | 397,535 | -10,107 |
| 2014 | Q3 | 407,642 | +27,513 |
| 2014 | Q2 | 380,129 | +43,781 |
| 2014 | Q1 | 336,348 | +65,118 |
| 2013 | Q4 | 271,230 | -2,744 |
| 2013 | Q3 | 273,974 | -46,909 |
| 2013 | Q2 | 320,883 | +307,201 |
| 2013 | Q1 | 13,682 | +34 |
| 2012 | Q4 | 13,648 | +469 |
| 2012 | Q3 | 13,179 | -3,092 |
| 2012 | Q2 | 16,271 |