| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2025/6 | 58.1 | +0.9% |
| 2024/6 | 57.6 | -4.4% |
| 2023/6 | 60.2 | +6.4% |
| 2022/6 | 56.5 | -1.3% |
| 2021/6 | 57.3 | +3.1% |
| 2020/6 | 55.6 | +11.1% |
| 2019/6 | 50.0 | +16.8% |
| 2018/6 | 42.8 | +21.1% |
| 2017/6 | 35.3 | +8.2% |
| 2016/6 | 32.7 | +12.4% |
| 2015/6 | 29.1 | +2.7% |
| 2014/6 | 28.3 | +1.8% |
| 2013/6 | 27.8 | -15.5% |
| 2012/6 | 32.9 | +1.6% |
| 2011/6 | 32.4 | -6.8% |
| 2010/6 | 34.8 | - |