| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 20.79 | -1.5% |
| 2024/5 | 21.11 | -3.7% |
| 2023/5 | 21.92 | +10.3% |
| 2022/5 | 19.88 | -24.6% |
| 2021/5 | 26.38 | +20.9% |
| 2020/5 | 21.82 | -10.4% |
| 2019/5 | 24.34 | +48.0% |
| 2018/5 | 16.45 | +111.7% |
| 2017/5 | 7.77 | -11.0% |
| 2016/5 | 8.73 | -21.8% |
| 2015/5 | 11.16 | -31.8% |
| 2014/5 | 16.36 | -24.8% |
| 2013/5 | 21.75 | -21.3% |
| 2012/5 | 27.63 | -272.9% |
| 2011/5 | -15.98 | - |