| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 2.58 | +1.4% |
| 2024/5 | 2.55 | -17.2% |
| 2023/5 | 3.08 | -2.2% |
| 2022/5 | 3.15 | +8.3% |
| 2021/5 | 2.91 | +4.8% |
| 2020/5 | 2.77 | -14.4% |
| 2019/5 | 3.24 | +1.3% |
| 2018/5 | 3.2 | -12.5% |
| 2017/5 | 3.66 | -6.8% |
| 2016/5 | 3.93 | +1.5% |
| 2015/5 | 3.87 | +13.8% |
| 2014/5 | 3.4 | +23.9% |
| 2013/5 | 2.74 | -12.5% |
| 2012/5 | 3.13 | -10.4% |
| 2011/5 | 3.5 | -3.0% |
| 2010/5 | 3.6 | - |