| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 2022/12 | 6,721 | +28.5% |
| 2021/12 | 5,229 | -66.4% |
| 2020/12 | 15,550 | -69.1% |
| 2019/12 | 50,347 | -63.6% |
| 2018/12 | 138,275 | +239.0% |
| 2017/12 | 40,791 | +98.8% |
| 2016/12 | 20,520 | -60.6% |
| 2015/12 | 52,103 | +521.1% |
| 2014/12 | 8,389 | -87.8% |
| 2013/12 | 68,608 | +260.4% |
| 2012/12 | 19,037 | -44.1% |
| 2011/12 | 34,066 | +21.2% |
| 2010/12 | 28,100 | - |