| （単位：千円） | 営業利益 | 前年比（％） |
|---|---|---|
| 2026/5 | 196,000 | -53.9% |
| 2025/5 | 425,613 | +24.5% |
| 2024/5 | 341,749 | -252.0% |
| 2023/5 | -224,877 | -37.5% |
| 2022/5 | -360,035 | -151.0% |
| 2021/5 | 705,549 | +19.4% |
| 2020/5 | 590,914 | +36.9% |
| 2019/5 | 431,754 | -51.9% |
| 2018/5 | 898,245 | +61.3% |
| 2017/5 | 557,043 | +171.4% |
| 2016/5 | 205,263 | +219.5% |
| 2015/5 | 64,238 | -39.3% |
| 2014/5 | 105,842 | - |