| （単位：千円） | 純利益 | 前年比（％） |
|---|---|---|
| 2025/5 | 855,073 | +10.4% |
| 2024/5 | 774,822 | -5.8% |
| 2023/5 | 822,353 | +55.0% |
| 2022/5 | 530,416 | +2.5% |
| 2021/5 | 517,393 | -15.3% |
| 2020/5 | 610,880 | +45.2% |
| 2019/5 | 420,670 | +16.3% |
| 2018/5 | 361,835 | +14.9% |
| 2017/5 | 314,893 | -15.9% |
| 2016/5 | 374,357 | +2.0% |
| 2015/5 | 366,969 | +18.0% |
| 2014/5 | 311,041 | -1.2% |
| 2013/5 | 314,911 | +5.8% |
| 2012/5 | 297,529 | +34.9% |
| 2011/5 | 220,551 | - |