| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 2024/5 | 28,776 | -60.5% |
| 2023/5 | 72,788 | -12.8% |
| 2022/5 | 83,438 | +263.5% |
| 2021/5 | 22,953 | -37.4% |
| 2020/5 | 36,652 | -26.9% |
| 2019/5 | 50,159 | +63.8% |
| 2018/5 | 30,624 | -11.0% |
| 2017/5 | 34,402 | -36.1% |
| 2016/5 | 53,803 | +7.1% |
| 2015/5 | 50,258 | +32.3% |
| 2014/5 | 37,975 | -4.3% |
| 2013/5 | 39,702 | -45.7% |
| 2012/5 | 73,092 | +42.1% |
| 2011/5 | 51,452 | - |