| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 39.1 | -7.1% |
| 2024/5 | 42.0 | +2.7% |
| 2023/5 | 40.9 | +3.4% |
| 2022/5 | 39.6 | +11.9% |
| 2021/5 | 35.4 | -0.6% |
| 2020/5 | 35.6 | -1.9% |
| 2019/5 | 36.3 | -5.4% |
| 2018/5 | 38.3 | -2.9% |
| 2017/5 | 39.5 | +1.3% |
| 2016/5 | 39.0 | +0.8% |
| 2015/5 | 38.7 | -1.4% |
| 2014/5 | 39.2 | +0.1% |
| 2013/5 | 39.2 | +1.5% |
| 2012/5 | 38.6 | +1.5% |
| 2011/5 | 38.0 | +4.3% |
| 2010/5 | 36.5 | - |