| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 2024/5 | 54,978 | +10.0% |
| 2023/5 | 50,000 | -4.8% |
| 2022/5 | 52,500 | +5.1% |
| 2021/5 | 49,956 | -60.0% |
| 2020/5 | 125,000 | -37.6% |
| 2019/5 | 200,222 | +1067.3% |
| 2018/5 | 17,152 | -21.9% |
| 2017/5 | 21,948 | -69.2% |
| 2016/5 | 71,346 | +80.5% |
| 2015/5 | 39,528 | +206.3% |
| 2014/5 | 12,907 | +328.4% |
| 2013/5 | 3,013 | -56.9% |
| 2012/5 | 6,985 | -68.0% |
| 2011/5 | 21,811 | - |