| （単位：十億） | 営業費用 | 前年比（％） |
|---|---|---|
| 2025/3 | 1,266 | +18.4% |
| 2024/3 | 1,069 | +128.1% |
| 2023/3 | 469 | +25.6% |
| 2022/3 | 373 | +9.0% |
| 2021/3 | 343 | +11.1% |
| 2020/3 | 308 | +20.7% |
| 2019/3 | 255 | +10.4% |
| 2018/3 | 231 | +13.2% |
| 2017/3 | 204 | +12.2% |
| 2016/3 | 182 | +25.6% |
| 2015/3 | 145 | +16.7% |
| 2014/3 | 124 | +5.6% |
| 2013/3 | 118 | +20.8% |
| 2012/3 | 97 | +18.1% |
| 2011/3 | 82 | +20.4% |
| 2010/3 | 68 | - |