| （単位：%） | 経常（税引前）利益率（％） | 前年比（％） |
|---|---|---|
| 2025/5 | -4.0 | +5.8% |
| 2024/5 | -3.8 | -805.3% |
| 2023/5 | 0.5 | -66.0% |
| 2022/5 | 1.6 | +825.2% |
| 2021/5 | 0.2 | -116.1% |
| 2020/5 | -1.1 | -180.6% |
| 2019/5 | 1.3 | +31.6% |
| 2018/5 | 1.0 | +272.4% |
| 2017/5 | 0.3 | -135.8% |
| 2016/5 | -0.7 | -142.6% |
| 2015/5 | 1.7 | -4589.4% |
| 2014/5 | 0.0 | -100.6% |
| 2013/5 | 6.2 | -24.5% |
| 2012/5 | 8.2 | -8.8% |
| 2011/5 | 9.0 | - |