| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 9.56 | +4.0% |
| 2024/5 | 9.19 | +13.6% |
| 2023/5 | 8.09 | +33.4% |
| 2022/5 | 6.07 | -58.5% |
| 2021/5 | 14.61 | +63.3% |
| 2020/5 | 8.95 | +18.3% |
| 2019/5 | 7.57 | +40.3% |
| 2018/5 | 5.39 | +740.0% |
| 2017/5 | 0.64 | -78.6% |
| 2016/5 | 3.0 | -45.1% |
| 2015/5 | 5.46 | -27.9% |
| 2014/5 | 7.58 | +58.0% |
| 2013/5 | 4.79 | +22.1% |
| 2012/5 | 3.93 | +1023.8% |
| 2011/5 | 0.35 | - |