| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q2 | 0 | Liquidated |
| 2015 | Q1 | 13,368 | +1,267 |
| 2014 | Q4 | 12,101 | -249 |
| 2014 | Q3 | 12,350 | -674 |
| 2014 | Q2 | 13,024 | -2,319 |
| 2014 | Q1 | 15,343 | -7,184 |
| 2013 | Q4 | 22,527 | -4,856 |
| 2013 | Q3 | 27,383 | +4,176 |
| 2013 | Q2 | 23,207 | +5,939 |
| 2013 | Q1 | 17,268 | -6,279 |
| 2012 | Q4 | 23,547 | -640 |
| 2012 | Q3 | 24,187 | -5,657 |
| 2012 | Q2 | 29,844 | -16,006 |
| 2012 | Q1 | 45,850 | -7,947 |
| 2011 | Q4 | 53,797 |