| （単位：百万） | 営業費用 | 前年比（％） |
|---|---|---|
| 2024/12 | 36,223 | +2.5% |
| 2023/12 | 35,354 | +6.7% |
| 2022/12 | 33,138 | +8.5% |
| 2021/12 | 30,554 | +25.0% |
| 2020/12 | 24,445 | +37.6% |
| 2019/12 | 17,765 | -13.4% |
| 2018/12 | 20,511 | +49.1% |
| 2017/12 | 13,759 | +52.3% |
| 2016/12 | 9,035 | +47.4% |
| 2015/12 | 6,132 | +66.3% |
| 2014/12 | 3,686 | +55.9% |
| 2013/12 | 2,365 | +23.7% |
| 2012/12 | 1,911 | +19.8% |
| 2011/12 | 1,594 | +37.0% |
| 2010/12 | 1,164 | - |