| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 2022/12 | 75,000 | +200.0% |
| 2021/12 | 25,000 | +1462.5% |
| 2020/12 | 1,600 | +77.8% |
| 2019/12 | 900 | -99.1% |
| 2018/12 | 101,700 | +3968.0% |
| 2017/12 | 2,500 | +47.1% |
| 2016/12 | 1,700 | +13.3% |
| 2015/12 | 1,500 | -98.4% |
| 2014/12 | 92,300 | -75.7% |
| 2013/12 | 379,400 | +85.1% |
| 2012/12 | 205,000 | -52.2% |
| 2011/12 | 428,600 | +585.8% |
| 2010/12 | 62,500 | - |