| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 2025/5 | 15,800 | +9.0% |
| 2024/5 | 14,500 | -86.4% |
| 2023/5 | 106,300 | +9.1% |
| 2022/5 | 97,400 | -529.1% |
| 2021/5 | -22,700 | -74.4% |
| 2020/5 | -88,500 | -454.0% |
| 2019/5 | 25,000 | -55.0% |
| 2018/5 | 55,600 | -37.5% |
| 2017/5 | 88,900 | +31.5% |
| 2016/5 | 67,600 | +105.5% |
| 2015/5 | 32,900 | -47.9% |
| 2014/5 | 63,100 | -7.1% |
| 2013/5 | 67,900 | -63.6% |
| 2012/5 | 186,300 | +85.0% |
| 2011/5 | 100,700 | - |