| （単位：千円） | 営業利益 | 前年比（％） |
|---|---|---|
| 2026/5 | 587,000 | +36.4% |
| 2025/5 | 430,406 | -18.5% |
| 2024/5 | 528,241 | +15.1% |
| 2023/5 | 458,868 | -24.1% |
| 2022/5 | 604,855 | -30.4% |
| 2021/5 | 868,680 | +71.8% |
| 2020/5 | 505,730 | -13.9% |
| 2019/5 | 587,699 | -25.6% |
| 2018/5 | 789,736 | +18.1% |
| 2017/5 | 668,685 | +14.0% |
| 2016/5 | 586,600 | +33.6% |
| 2015/5 | 439,140 | -14.7% |
| 2014/5 | 514,918 | - |