| 経常（税引前）利益率（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 2.21 | -64.0% |
| 2024/5 | 6.13 | -36.0% |
| 2023/5 | 9.58 | -21.0% |
| 2022/5 | 12.12 | +20.1% |
| 2021/5 | 10.1 | +183.4% |
| 2020/5 | 3.56 | -56.4% |
| 2019/5 | 8.18 | -8.1% |
| 2018/5 | 8.9 | +5.6% |
| 2017/5 | 8.42 | -29.3% |
| 2016/5 | 11.92 | +46.6% |
| 2015/5 | 8.13 | -23.4% |
| 2014/5 | 10.62 | +3.0% |
| 2013/5 | 10.31 | -22.3% |
| 2012/5 | 13.28 | -47.8% |
| 2011/5 | 25.44 | - |