| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 4Q20 | 0 | - |
| 3Q20 | 0 | -100.0% |
| 2Q20 | 0 | -100.0% |
| 1Q20 | 12,000 | -95.6% |
| 3Q19 | 156,000 | -77.5% |
| 2Q19 | 42,000 | -85.8% |
| 1Q19 | 274,000 | +25.7% |
| 4Q18 | 263,000 | +6.5% |
| 3Q18 | 692,000 | +352.3% |
| 2Q18 | 295,000 | +255.4% |
| 1Q18 | 218,000 | +215.9% |
| 4Q17 | 247,000 | +7.4% |
| 3Q17 | 153,000 | -78.4% |
| 2Q17 | 83,000 | -82.9% |
| 1Q17 | 69,000 | -92.5% |
| 4Q16 | 230,000 | -37.3% |
| 3Q16 | 709,000 | - |
| 2Q16 | 485,000 | - |
| 1Q16 | 916,000 | - |
| 4Q15 | 367,000 | - |
| 3Q14 | 0 | - |
| 2Q14 | 0 | -100.0% |
| 1Q14 | 0 | -100.0% |
| 4Q13 | 0 | -100.0% |
| 3Q13 | 0 | - |
| 2Q13 | 25,000 | - |
| 1Q13 | 113,000 | - |
| 4Q12 | 21,000 | -87.3% |
| 4Q11 | 166,000 | +1560.0% |
| 4Q10 | 10,000 | - |
| 3Q10 | 209,000 | - |