| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 2023/10 | 12,303 | - |
| 2021/10 | 19,958 | +61.5% |
| 2020/10 | 12,360 | -92.9% |
| 2019/10 | 174,246 | +271.5% |
| 2018/10 | 46,898 | -50.4% |
| 2017/10 | 94,487 | +7.5% |
| 2016/10 | 87,885 | +252.6% |
| 2015/10 | 24,928 | -57.7% |
| 2014/10 | 58,937 | -16.8% |
| 2013/10 | 70,819 | +15.4% |
| 2012/10 | 61,366 | -59.9% |
| 2011/10 | 152,930 | +119.8% |
| 2010/10 | 69,574 | - |