| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q3 | 1,605,999 | -44,843 |
| 2014 | Q2 | 1,650,842 | -71,804 |
| 2014 | Q1 | 1,722,646 | -153,234 |
| 2013 | Q4 | 1,875,880 | -15,483 |
| 2013 | Q3 | 1,891,363 | +427,306 |
| 2013 | Q2 | 1,464,057 | -178,550 |
| 2013 | Q1 | 1,642,607 | +13,546 |
| 2012 | Q4 | 1,629,061 | +450,862 |
| 2012 | Q3 | 1,178,199 | +7,228 |
| 2012 | Q2 | 1,170,971 | +91,155 |
| 2012 | Q1 | 1,079,816 | +111,084 |
| 2011 | Q4 | 968,732 | -313,758 |
| 2011 | Q3 | 1,282,490 | -511,945 |
| 2011 | Q2 | 1,794,435 | -140,784 |
| 2011 | Q1 | 1,935,219 |