| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 9.85 | -4.9% |
| 2024/5 | 10.36 | -3.0% |
| 2023/5 | 10.68 | -5.7% |
| 2022/5 | 11.32 | +41.3% |
| 2021/5 | 8.01 | -488.5% |
| 2020/5 | -2.06 | -122.4% |
| 2019/5 | 9.19 | +22.6% |
| 2018/5 | 7.5 | -15.7% |
| 2017/5 | 8.89 | +37.0% |
| 2016/5 | 6.49 | +150.3% |
| 2015/5 | 2.59 | -6.7% |
| 2014/5 | 2.78 | -54.5% |
| 2013/5 | 6.11 | -23.4% |
| 2012/5 | 7.98 | -7.6% |
| 2011/5 | 8.63 | +13.0% |
| 2010/5 | 7.64 | - |