| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q3 | 53,968 | +476 |
| 2014 | Q2 | 53,492 | +546 |
| 2014 | Q1 | 52,946 | +1,687 |
| 2013 | Q4 | 51,259 | -2,592 |
| 2013 | Q3 | 53,851 | +4,026 |
| 2013 | Q2 | 49,825 | -6,060 |
| 2013 | Q1 | 55,885 | -7,880 |
| 2012 | Q4 | 63,765 | -601 |
| 2012 | Q3 | 64,366 | -1,461 |
| 2012 | Q2 | 65,827 | +499 |
| 2012 | Q1 | 65,328 | +3,213 |
| 2011 | Q4 | 62,115 | -10,258 |
| 2011 | Q3 | 72,373 | -21,270 |
| 2011 | Q2 | 93,643 | +1,634 |
| 2011 | Q1 | 92,009 |