| （単位：千円） | 営業費用 | 前年比（％） |
|---|---|---|
| 2026/6 | 541,538 | +5.8% |
| 2025/6 | 512,008 | -1.4% |
| 2024/6 | 519,286 | -1.9% |
| 2023/6 | 529,319 | -1.3% |
| 2022/6 | 536,509 | -0.8% |
| 2021/6 | 540,889 | -7.7% |
| 2020/6 | 585,721 | -6.8% |
| 2019/6 | 628,305 | -6.5% |
| 2018/6 | 671,891 | -12.3% |
| 2017/6 | 766,162 | -5.7% |
| 2016/6 | 812,060 | -1.1% |
| 2015/6 | 821,084 | +4.5% |
| 2014/6 | 785,996 | +1.3% |
| 2013/6 | 775,913 | - |