| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 1.58 | -122.9% |
| 2024/5 | -6.88 | -328.9% |
| 2023/5 | 3.01 | -54.6% |
| 2022/5 | 6.62 | -26.3% |
| 2021/5 | 8.99 | +8.9% |
| 2020/5 | 8.25 | -31.5% |
| 2019/5 | 12.05 | -7.6% |
| 2018/5 | 13.04 | +94.3% |
| 2017/5 | 6.71 | +44.5% |
| 2016/5 | 4.64 | +46.8% |
| 2015/5 | 3.16 | +105.4% |
| 2014/5 | 1.54 | +60.4% |
| 2013/5 | 0.96 | -157.0% |
| 2012/5 | -1.68 | -346.0% |
| 2011/5 | 0.68 | +10.5% |
| 2010/5 | 0.62 | - |