| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 8.39 | -35.7% |
| 2024/5 | 13.04 | +7.7% |
| 2023/5 | 12.11 | -15.0% |
| 2022/5 | 14.24 | -4.8% |
| 2021/5 | 14.96 | +93.8% |
| 2020/5 | 7.72 | -37.1% |
| 2019/5 | 12.27 | +3.3% |
| 2018/5 | 11.88 | -16.5% |
| 2017/5 | 14.22 | -0.4% |
| 2016/5 | 14.28 | +3.9% |
| 2015/5 | 13.74 | +7.8% |
| 2014/5 | 12.75 | -1.4% |
| 2013/5 | 12.93 | +4.6% |
| 2012/5 | 12.36 | -9.3% |
| 2011/5 | 13.63 | +3.0% |
| 2010/5 | 13.24 | - |