| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 20.8 | -1.6% |
| 2024/5 | 21.1 | -3.7% |
| 2023/5 | 21.9 | +10.3% |
| 2022/5 | 19.9 | -24.6% |
| 2021/5 | 26.4 | +20.9% |
| 2020/5 | 21.8 | -10.4% |
| 2019/5 | 24.3 | +48.0% |
| 2018/5 | 16.4 | +111.7% |
| 2017/5 | 7.8 | -11.0% |
| 2016/5 | 8.7 | -21.8% |
| 2015/5 | 11.2 | -31.8% |
| 2014/5 | 16.4 | -24.8% |
| 2013/5 | 21.8 | -21.3% |
| 2012/5 | 27.6 | -272.9% |
| 2011/5 | -16.0 | - |