| （単位：百万円） | 売上原価 | 前年比（％） |
|---|---|---|
| 2026/3 | 779,072 | +4.3% |
| 2025/3 | 746,875 | +5.8% |
| 2024/3 | 705,731 | +8.2% |
| 2023/3 | 652,129 | +11.9% |
| 2022/3 | 582,602 | +10.1% |
| 2021/3 | 529,314 | -4.8% |
| 2020/3 | 556,218 | -3.0% |
| 2019/3 | 573,385 | +5.7% |
| 2018/3 | 542,296 | +8.2% |
| 2017/3 | 501,371 | -0.6% |
| 2016/3 | 504,406 | -0.3% |
| 2015/3 | 505,715 | +5.3% |
| 2014/3 | 480,237 | +7.5% |
| 2013/3 | 446,640 | - |