| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 10.38 | -19.4% |
| 2024/5 | 12.87 | -11.9% |
| 2023/5 | 14.61 | +37.8% |
| 2022/5 | 10.6 | +21.1% |
| 2021/5 | 8.75 | +49.1% |
| 2020/5 | 5.87 | -37.4% |
| 2019/5 | 9.37 | +72.5% |
| 2018/5 | 5.43 | +56.4% |
| 2017/5 | 3.47 | +76.0% |
| 2016/5 | 1.97 | -73.7% |
| 2015/5 | 7.5 | +110.8% |
| 2014/5 | 3.56 | -57.9% |
| 2013/5 | 8.45 | -3.0% |
| 2012/5 | 8.71 | +32.0% |
| 2011/5 | 6.6 | - |