| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2016 | Q2 | 287,504 | +499 |
| 2016 | Q1 | 287,005 | -32,353 |
| 2015 | Q4 | 319,358 | +9,196 |
| 2015 | Q3 | 310,162 | +4,927 |
| 2015 | Q2 | 305,235 | +80,813 |
| 2015 | Q1 | 224,422 | -17,758 |
| 2014 | Q4 | 242,180 | +67,952 |
| 2014 | Q3 | 174,228 | -8,675 |
| 2014 | Q2 | 182,903 | +32,297 |
| 2014 | Q1 | 150,606 | -62,517 |
| 2013 | Q4 | 213,123 | +15,188 |
| 2013 | Q3 | 197,935 | +4,664 |
| 2013 | Q2 | 193,271 | -7,420 |
| 2013 | Q1 | 200,691 | +57,070 |
| 2012 | Q4 | 143,621 | -27,965 |
| 2012 | Q3 | 171,586 | +87,681 |
| 2012 | Q2 | 83,905 | +33,686 |
| 2012 | Q1 | 50,219 | +13,199 |
| 2011 | Q4 | 37,020 |