| （単位：百万） | 営業費用 | 前年比（％） |
|---|---|---|
| 2024/12 | 29,127 | - |
| 2022/12 | 15,438 | -8.3% |
| 2021/12 | 16,836 | +7.2% |
| 2020/12 | 15,708 | -32.5% |
| 2019/12 | 23,254 | +5.5% |
| 2018/12 | 22,036 | +14.9% |
| 2017/12 | 19,175 | +19.3% |
| 2016/12 | 16,067 | +115.0% |
| 2015/12 | 7,473 | +38.5% |
| 2014/12 | 5,397 | +70.7% |
| 2013/12 | 3,162 | +28.2% |
| 2012/12 | 2,466 | +51.6% |
| 2011/12 | 1,626 | +35.4% |
| 2010/12 | 1,201 | - |