| （単位：百万） | 営業費用 | 前年比（％） |
|---|---|---|
| 2025/12 | 8,477 | +6.2% |
| 2024/12 | 7,985 | -12.0% |
| 2023/12 | 9,075 | -3.0% |
| 2022/12 | 9,351 | -8.8% |
| 2021/12 | 10,256 | +42.5% |
| 2020/12 | 7,195 | -3.7% |
| 2019/12 | 7,469 | -15.1% |
| 2018/12 | 8,799 | -13.5% |
| 2017/12 | 10,169 | +3.0% |
| 2016/12 | 9,873 | -14.3% |
| 2015/12 | 11,514 | +67.0% |
| 2014/12 | 6,893 | +16.4% |
| 2013/12 | 5,921 | +8.9% |
| 2012/12 | 5,435 | - |