| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2026/5 | 1.7 | -50.4% |
| 2025/5 | 3.4 | -2.5% |
| 2024/5 | 3.5 | +76.7% |
| 2023/5 | 2.0 | -49.8% |
| 2022/5 | 4.0 | -0.1% |
| 2021/5 | 4.0 | +37.4% |
| 2020/5 | 2.9 | +82.3% |
| 2019/5 | 1.6 | -51.7% |
| 2018/5 | 3.3 | -13.6% |
| 2017/5 | 3.8 | -3.6% |
| 2016/5 | 4.0 | -1.3% |
| 2015/5 | 4.0 | -1.2% |
| 2014/5 | 4.1 | -0.0% |
| 2013/5 | 4.1 | -14.4% |
| 2012/5 | 4.7 | -7.8% |
| 2011/5 | 5.1 | - |