| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 10.0 | +96.6% |
| 2024/5 | 5.1 | -9.9% |
| 2023/5 | 5.6 | -37.3% |
| 2022/5 | 9.0 | -29.0% |
| 2021/5 | 12.6 | +43.7% |
| 2020/5 | 8.8 | +1.7% |
| 2019/5 | 8.6 | -21.7% |
| 2018/5 | 11.0 | +18.2% |
| 2017/5 | 9.3 | +85.9% |
| 2016/5 | 5.0 | -260.2% |
| 2015/5 | -3.1 | -196.1% |
| 2014/5 | 3.3 | -56.1% |
| 2013/5 | 7.4 | +57.3% |
| 2012/5 | 4.7 | -52.7% |
| 2011/5 | 10.0 | +10.9% |
| 2010/5 | 9.0 | - |