| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 10.15 | -8.9% |
| 2024/5 | 11.14 | +6.2% |
| 2023/5 | 10.48 | +9.7% |
| 2022/5 | 9.56 | +39.0% |
| 2021/5 | 6.88 | +48.7% |
| 2020/5 | 4.63 | -3.4% |
| 2019/5 | 4.79 | +20.6% |
| 2018/5 | 3.97 | -26.3% |
| 2017/5 | 5.39 | +20.7% |
| 2016/5 | 4.46 | +117.1% |
| 2015/5 | 2.06 | -12.4% |
| 2014/5 | 2.35 | +44.4% |
| 2013/5 | 1.62 | -69.3% |
| 2012/5 | 5.29 | -10.0% |
| 2011/5 | 5.88 | - |