| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2017 | Q2 | 10,115,513 | -13,356,243 |
| 2017 | Q1 | 23,471,756 | +5,600,386 |
| 2016 | Q4 | 17,871,370 | -4,904,085 |
| 2016 | Q3 | 22,775,455 | +9,432,574 |
| 2016 | Q2 | 13,342,881 | +2,157,004 |
| 2016 | Q1 | 11,185,877 | +125,168 |
| 2015 | Q4 | 11,060,709 | +762,764 |
| 2015 | Q3 | 10,297,945 | -11,533,034 |
| 2015 | Q2 | 21,830,979 | -3,773,267 |
| 2015 | Q1 | 25,604,246 | +3,984,259 |
| 2014 | Q4 | 21,619,987 | -4,946,111 |
| 2014 | Q3 | 26,566,098 | +1,899,736 |
| 2014 | Q2 | 24,666,362 |