| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 6.19 | -7.0% |
| 2024/5 | 6.66 | +11.9% |
| 2023/5 | 5.95 | +13.6% |
| 2022/5 | 5.24 | -34.1% |
| 2021/5 | 7.95 | +229.7% |
| 2020/5 | 2.41 | +156.6% |
| 2019/5 | 0.94 | -85.9% |
| 2018/5 | 6.65 | -12.4% |
| 2017/5 | 7.59 | +39.5% |
| 2016/5 | 5.44 | +58.7% |
| 2015/5 | 3.43 | -52.5% |
| 2014/5 | 7.22 | +30.2% |
| 2013/5 | 5.54 | -24.7% |
| 2012/5 | 7.36 | +27.7% |
| 2011/5 | 5.76 | +5.7% |
| 2010/5 | 5.45 | - |