| （単位：百万円） | 売上原価 | 前年比（％） |
|---|---|---|
| 2026/3 | 555,885 | -1.1% |
| 2025/3 | 562,106 | +2.0% |
| 2024/3 | 551,299 | -3.7% |
| 2023/3 | 572,628 | +12.1% |
| 2022/3 | 510,782 | +21.4% |
| 2021/3 | 420,717 | +4.3% |
| 2020/3 | 403,460 | -4.9% |
| 2019/3 | 424,325 | +1.6% |
| 2018/3 | 417,796 | +19.7% |
| 2017/3 | 349,051 | -10.2% |
| 2016/3 | 388,546 | -1.8% |
| 2015/3 | 395,695 | +6.8% |
| 2014/3 | 370,629 | +3.7% |
| 2013/3 | 357,294 | - |