| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2025/6 | 12.6 | -24.9% |
| 2024/6 | 16.7 | -26.9% |
| 2023/6 | 22.9 | -23.4% |
| 2022/6 | 29.9 | -27.0% |
| 2021/6 | 41.0 | -23.5% |
| 2020/6 | 53.5 | -24.1% |
| 2019/6 | 70.5 | -23.5% |
| 2018/6 | 92.2 | -13.5% |
| 2017/6 | 106.5 | +89.1% |
| 2016/6 | 56.3 | +48.8% |
| 2015/6 | 37.8 | +64.6% |
| 2014/6 | 23.0 | +16.4% |
| 2013/6 | 19.8 | +9.8% |
| 2012/6 | 18.0 | -13.8% |
| 2011/6 | 20.9 | +95.2% |
| 2010/6 | 10.7 | - |