| （単位：千円） | 営業利益 | 前年比（％） |
|---|---|---|
| 2026/5 | 191,000 | +93.4% |
| 2025/5 | 98,783 | -66.9% |
| 2024/5 | 298,281 | -21.4% |
| 2023/5 | 379,650 | -15.6% |
| 2022/5 | 449,877 | +35.8% |
| 2021/5 | 331,269 | +211.4% |
| 2020/5 | 106,378 | -39.6% |
| 2019/5 | 176,078 | +15.3% |
| 2018/5 | 152,747 | +24.0% |
| 2017/5 | 123,227 | -30.0% |
| 2016/5 | 176,137 | +73.4% |
| 2015/5 | 101,568 | -24.1% |
| 2014/5 | 133,847 | - |