| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | -34.2 | +77.1% |
| 2024/5 | -19.3 | +11.8% |
| 2023/5 | -17.2 | -2927.4% |
| 2022/5 | 0.6 | -104.3% |
| 2021/5 | -14.3 | +3470.0% |
| 2020/5 | -0.4 | -129.1% |
| 2019/5 | 1.4 | +267.9% |
| 2018/5 | 0.4 | -76.7% |
| 2017/5 | 1.6 | +22.4% |
| 2016/5 | 1.3 | +459.3% |
| 2015/5 | 0.2 | -46.1% |
| 2014/5 | 0.4 | -124.8% |
| 2013/5 | -1.7 | -80.3% |
| 2012/5 | -8.9 | +2.3% |
| 2011/5 | -8.7 | - |