| （単位：百万円） | 売上高 | 前年比（％） |
|---|---|---|
| 2025/5 | 24,962 | +0.7% |
| 2024/5 | 24,799 | -1.9% |
| 2023/5 | 25,282 | -5.5% |
| 2022/5 | 26,758 | -5.4% |
| 2021/5 | 28,293 | -3.3% |
| 2020/5 | 29,267 | -13.6% |
| 2019/5 | 33,862 | -0.9% |
| 2018/5 | 34,186 | -4.2% |
| 2017/5 | 35,680 | -23.7% |
| 2016/5 | 46,758 | +1.6% |
| 2015/5 | 46,025 | +5.3% |
| 2014/5 | 43,689 | -0.2% |
| 2013/5 | 43,765 | +1.9% |
| 2012/5 | 42,942 | +7.9% |
| 2011/5 | 39,807 | - |