| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q3 | 0 | Liquidated |
| 2014 | Q2 | 68,405 | -6,861 |
| 2014 | Q1 | 75,266 | +25,437 |
| 2013 | Q4 | 49,829 | -28,754 |
| 2013 | Q3 | 78,583 | -6,259 |
| 2013 | Q2 | 84,842 | -11,545 |
| 2013 | Q1 | 96,387 | -3,200 |
| 2012 | Q4 | 99,587 | +9,372 |
| 2012 | Q3 | 90,215 | +16,215 |
| 2012 | Q2 | 74,000 | -21,327 |
| 2012 | Q1 | 95,327 | +27,471 |
| 2011 | Q4 | 67,856 | -10,968 |
| 2011 | Q3 | 78,824 | -20,916 |
| 2011 | Q2 | 99,740 | +27,888 |
| 2011 | Q1 | 71,852 |