| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | -0.9 | -92.1% |
| 2024/5 | -10.9 | -169.0% |
| 2023/5 | 15.8 | -1.6% |
| 2022/5 | 16.1 | +127.7% |
| 2021/5 | 7.1 | -137.6% |
| 2020/5 | -18.8 | +307.9% |
| 2019/5 | -4.6 | -51.8% |
| 2018/5 | -9.5 | -268.3% |
| 2017/5 | 5.7 | -33.5% |
| 2016/5 | 8.5 | +376.7% |
| 2015/5 | 1.8 | -79.7% |
| 2014/5 | 8.8 | +133.6% |
| 2013/5 | 3.8 | -10.7% |
| 2012/5 | 4.2 | -39.7% |
| 2011/5 | 7.0 | - |