| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 35.5 | -2.7% |
| 2024/5 | 36.5 | +10.6% |
| 2023/5 | 33.0 | -0.3% |
| 2022/5 | 33.1 | +7.9% |
| 2021/5 | 30.7 | +9.3% |
| 2020/5 | 28.0 | +21.7% |
| 2019/5 | 23.0 | +15.5% |
| 2018/5 | 19.9 | +19.7% |
| 2017/5 | 16.7 | +8.7% |
| 2016/5 | 15.3 | +361.2% |
| 2015/5 | 3.3 | +113.6% |
| 2014/5 | 1.6 | -135.7% |
| 2013/5 | -4.4 | -68.1% |
| 2012/5 | -13.7 | -363.1% |
| 2011/5 | 5.2 | - |