| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 14.38 | -13.1% |
| 2024/5 | 16.55 | -11.1% |
| 2023/5 | 18.62 | +10.5% |
| 2022/5 | 16.85 | -13.6% |
| 2021/5 | 19.51 | +24.5% |
| 2020/5 | 15.68 | -4.7% |
| 2019/5 | 16.45 | -12.7% |
| 2018/5 | 18.85 | -23.2% |
| 2017/5 | 24.54 | +42.8% |
| 2016/5 | 17.19 | -2.5% |
| 2015/5 | 17.64 | +33.5% |
| 2014/5 | 13.21 | +5.5% |
| 2013/5 | 12.52 | +20.8% |
| 2012/5 | 10.37 | +26.0% |
| 2011/5 | 8.23 | - |