| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2025/6 | 36.85 | -13.5% |
| 2024/6 | 42.62 | -14.1% |
| 2023/6 | 49.64 | -4.5% |
| 2022/6 | 52.0 | +4.2% |
| 2021/6 | 49.88 | +30.7% |
| 2020/6 | 38.17 | +5.4% |
| 2019/6 | 36.22 | -1.4% |
| 2018/6 | 36.73 | -27.2% |
| 2017/6 | 50.48 | -8.8% |
| 2016/6 | 55.33 | +21.5% |
| 2015/6 | 45.54 | +13.4% |
| 2014/6 | 40.17 | -13.4% |
| 2013/6 | 46.37 | +26.8% |
| 2012/6 | 36.56 | -44.1% |
| 2011/6 | 65.44 | - |