| （単位：百万円） | 売上高 | 前年比（％） |
|---|---|---|
| 2026/5 | 23,543 | -2.7% |
| 2025/5 | 24,188 | -5.5% |
| 2024/5 | 25,605 | -3.4% |
| 2023/5 | 26,494 | -4.4% |
| 2022/5 | 27,702 | -10.2% |
| 2021/5 | 30,859 | -13.4% |
| 2020/5 | 35,634 | -2.3% |
| 2019/5 | 36,478 | -7.3% |
| 2018/5 | 39,362 | -2.1% |
| 2017/5 | 40,188 | +0.4% |
| 2016/5 | 40,022 | +2.3% |
| 2015/5 | 39,133 | +0.5% |
| 2014/5 | 38,920 | +9.3% |
| 2013/5 | 35,620 | +11.1% |
| 2012/5 | 32,049 | - |