| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2025/1 | 36.95 | -15.6% |
| 2024/1 | 43.81 | -5.5% |
| 2023/1 | 46.37 | +13.1% |
| 2022/1 | 40.99 | -19.0% |
| 2021/1 | 50.62 | -15.9% |
| 2020/1 | 60.18 | +5.6% |
| 2019/1 | 57.01 | +36.4% |
| 2018/1 | 41.8 | -12.0% |
| 2017/1 | 47.52 | -3.0% |
| 2016/1 | 48.99 | -7.8% |
| 2015/1 | 53.16 | -5.8% |
| 2014/1 | 56.4 | +4.8% |
| 2013/1 | 53.81 | -11.5% |
| 2012/1 | 60.78 | -4.5% |
| 2011/1 | 63.65 | - |