| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2025/6 | 58.09 | +0.9% |
| 2024/6 | 57.57 | -4.4% |
| 2023/6 | 60.19 | +6.4% |
| 2022/6 | 56.55 | -1.3% |
| 2021/6 | 57.27 | +3.1% |
| 2020/6 | 55.56 | +11.1% |
| 2019/6 | 49.99 | +16.8% |
| 2018/6 | 42.8 | +21.1% |
| 2017/6 | 35.34 | +8.2% |
| 2016/6 | 32.67 | +12.4% |
| 2015/6 | 29.07 | +2.7% |
| 2014/6 | 28.31 | +1.8% |
| 2013/6 | 27.81 | -15.5% |
| 2012/6 | 32.92 | +1.6% |
| 2011/6 | 32.4 | -6.8% |
| 2010/6 | 34.77 | - |