| （単位：千円） | 純利益 | 前年比（％） |
|---|---|---|
| 2025/5 | 293,670 | -31.2% |
| 2024/5 | 427,080 | +34.8% |
| 2023/5 | 316,911 | +21.5% |
| 2022/5 | 260,928 | +119.3% |
| 2021/5 | 118,974 | -66.1% |
| 2020/5 | 350,947 | -45.2% |
| 2019/5 | 640,224 | +41.7% |
| 2018/5 | 451,665 | +3.5% |
| 2017/5 | 436,464 | -1.2% |
| 2016/5 | 441,616 | -1.1% |
| 2015/5 | 446,436 | +43.8% |
| 2014/5 | 310,480 | +474.1% |
| 2013/5 | 54,084 | +78.1% |
| 2012/5 | 30,360 | -115.9% |
| 2011/5 | -191,021 | - |