| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 4Q21 | 91,000 | - |
| 1Q18 | 25,000 | +78.6% |
| 4Q17 | 1,000 | 0.0% |
| 3Q17 | 1,000 | - |
| 2Q17 | 1,000 | -66.7% |
| 1Q17 | 14,000 | +16.7% |
| 4Q16 | 1,000 | -99.6% |
| 3Q16 | 0 | -100.0% |
| 2Q16 | 3,000 | -96.7% |
| 1Q16 | 12,000 | -93.5% |
| 4Q15 | 278,000 | +202.2% |
| 3Q15 | 264,000 | +306.2% |
| 2Q15 | 92,000 | -44.2% |
| 1Q15 | 185,000 | -43.6% |
| 4Q14 | 92,000 | -72.5% |
| 3Q14 | 65,000 | -83.1% |
| 2Q14 | 165,000 | -64.9% |
| 1Q14 | 328,000 | -17.4% |
| 4Q13 | 334,000 | +1864.7% |
| 3Q13 | 385,000 | - |
| 2Q13 | 470,000 | +5122.2% |
| 1Q13 | 397,000 | +3509.1% |
| 4Q12 | 17,000 | - |
| 3Q12 | 0 | -100.0% |
| 2Q12 | 9,000 | -41.4% |
| 1Q12 | 11,000 | -24.8% |
| 4Q11 | 0 | - |
| 3Q11 | 1,000 | - |
| 2Q11 | 15,364 | - |
| 1Q11 | 14,636 | - |