| （単位：千円） | 純利益 | 前年比（％） |
|---|---|---|
| 2025/5 | 472,287 | +16.9% |
| 2024/5 | 403,885 | +25.2% |
| 2023/5 | 322,674 | -1.0% |
| 2022/5 | 325,964 | +13.5% |
| 2021/5 | 287,098 | +26.2% |
| 2020/5 | 227,411 | -24.6% |
| 2019/5 | 301,568 | +5.7% |
| 2018/5 | 285,186 | +37.4% |
| 2017/5 | 207,494 | +26.3% |
| 2016/5 | 164,261 | +6.0% |
| 2015/5 | 154,981 | +51.4% |
| 2014/5 | 102,341 | +110.2% |
| 2013/5 | 48,680 | +19.7% |
| 2012/5 | 40,662 | -5.7% |
| 2011/5 | 43,139 | - |