| （単位：千円） | 純利益 | 前年比（％） |
|---|---|---|
| 2025/5 | 418,774 | +7.9% |
| 2024/5 | 388,116 | +20.9% |
| 2023/5 | 321,058 | +13.2% |
| 2022/5 | 283,501 | +19.3% |
| 2021/5 | 237,721 | +18.4% |
| 2020/5 | 200,837 | +28.6% |
| 2019/5 | 156,216 | +36.9% |
| 2018/5 | 114,084 | +27.1% |
| 2017/5 | 89,760 | -11.2% |
| 2016/5 | 101,100 | +589.7% |
| 2015/5 | 14,659 | +68.0% |
| 2014/5 | 8,728 | -125.3% |
| 2013/5 | -34,444 | -50.9% |
| 2012/5 | -70,120 | -641.1% |
| 2011/5 | 12,959 | - |