| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | -3.99 | +5.8% |
| 2024/5 | -3.77 | -805.3% |
| 2023/5 | 0.53 | -66.0% |
| 2022/5 | 1.57 | +825.2% |
| 2021/5 | 0.17 | -116.1% |
| 2020/5 | -1.05 | -180.6% |
| 2019/5 | 1.31 | +31.6% |
| 2018/5 | 0.99 | +272.4% |
| 2017/5 | 0.27 | -135.8% |
| 2016/5 | -0.74 | -142.6% |
| 2015/5 | 1.75 | -4589.4% |
| 2014/5 | -0.04 | -100.6% |
| 2013/5 | 6.18 | -24.5% |
| 2012/5 | 8.18 | -8.8% |
| 2011/5 | 8.97 | - |