| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 9.73 | -16.5% |
| 2024/5 | 11.65 | +30.2% |
| 2023/5 | 8.95 | +85.1% |
| 2022/5 | 4.83 | -35.3% |
| 2021/5 | 7.47 | +203.8% |
| 2020/5 | 2.46 | -170.9% |
| 2019/5 | -3.47 | -175.6% |
| 2018/5 | 4.59 | -35.7% |
| 2017/5 | 7.14 | +41.7% |
| 2016/5 | 5.04 | +43.0% |
| 2015/5 | 3.52 | -61.2% |
| 2014/5 | 9.08 | +149.3% |
| 2013/5 | 3.64 | +187.6% |
| 2012/5 | 1.27 | -55.4% |
| 2011/5 | 2.84 | - |