| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 12.72 | -7.0% |
| 2024/5 | 13.68 | +32.3% |
| 2023/5 | 10.33 | +0.9% |
| 2022/5 | 10.24 | -3.6% |
| 2021/5 | 10.62 | +67.4% |
| 2020/5 | 6.34 | +39.0% |
| 2019/5 | 4.56 | +10.9% |
| 2018/5 | 4.11 | +236.3% |
| 2017/5 | 1.22 | -58.4% |
| 2016/5 | 2.94 | +21.5% |
| 2015/5 | 2.42 | +0.4% |
| 2014/5 | 2.41 | -34.0% |
| 2013/5 | 3.65 | +69.0% |
| 2012/5 | 2.16 | -19.4% |
| 2011/5 | 2.68 | - |