| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 4Q21 | 0 | -100.0% |
| 3Q21 | 0 | - |
| 2Q21 | 0 | -100.0% |
| 1Q21 | 77,765 | +1402.4% |
| 4Q20 | 56 | -98.8% |
| 3Q20 | 0 | -100.0% |
| 2Q20 | 35 | -99.4% |
| 1Q20 | 5,176 | -4.9% |
| 4Q19 | 4,497 | +55.0% |
| 3Q19 | 18,376 | +219.1% |
| 2Q19 | 6,358 | -84.7% |
| 1Q19 | 5,444 | +89.4% |
| 4Q18 | 2,901 | +56.2% |
| 3Q18 | 5,758 | +318.8% |
| 2Q18 | 41,619 | +1302.7% |
| 1Q18 | 2,875 | -92.9% |
| 4Q17 | 1,857 | -85.7% |
| 3Q17 | 1,375 | -61.1% |
| 2Q17 | 2,967 | +15.6% |
| 1Q17 | 40,340 | +3312.9% |
| 4Q16 | 13,021 | -68.9% |
| 3Q16 | 3,532 | -86.6% |
| 2Q16 | 2,566 | +101.3% |
| 1Q16 | 1,182 | -75.9% |
| 4Q15 | 41,934 | +2512.7% |
| 3Q15 | 26,352 | +2943.0% |
| 2Q15 | 1,275 | +82.9% |
| 1Q15 | 4,908 | +3066.5% |
| 4Q14 | 1,605 | +501.1% |
| 3Q14 | 866 | +316.3% |
| 2Q14 | 697 | - |
| 1Q14 | 155 | - |
| 4Q13 | 267 | - |
| 3Q13 | 208 | - |
| 3Q12 | 0 | - |