| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q2 | 179,223 | +17,326 |
| 2014 | Q1 | 161,897 | +8,968 |
| 2013 | Q4 | 152,929 | +12,236 |
| 2013 | Q3 | 140,693 | -22,533 |
| 2013 | Q2 | 163,226 | +13,644 |
| 2013 | Q1 | 149,582 | +41,987 |
| 2012 | Q4 | 107,595 | -15,159 |
| 2012 | Q3 | 122,754 | +53,130 |
| 2012 | Q2 | 69,624 | +22,352 |
| 2012 | Q1 | 47,272 | +16,051 |
| 2011 | Q4 | 31,221 |