| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 8.4 | -35.7% |
| 2024/5 | 13.0 | +7.7% |
| 2023/5 | 12.1 | -15.0% |
| 2022/5 | 14.2 | -4.8% |
| 2021/5 | 15.0 | +93.8% |
| 2020/5 | 7.7 | -37.1% |
| 2019/5 | 12.3 | +3.3% |
| 2018/5 | 11.9 | -16.5% |
| 2017/5 | 14.2 | -0.4% |
| 2016/5 | 14.3 | +3.9% |
| 2015/5 | 13.7 | +7.8% |
| 2014/5 | 12.7 | -1.4% |
| 2013/5 | 12.9 | +4.6% |
| 2012/5 | 12.4 | -9.3% |
| 2011/5 | 13.6 | +3.0% |
| 2010/5 | 13.2 | - |