| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 32.28 | -3.5% |
| 2024/5 | 33.46 | -11.7% |
| 2023/5 | 37.88 | -12.2% |
| 2022/5 | 43.16 | -5.7% |
| 2021/5 | 45.79 | -36.8% |
| 2020/5 | 72.4 | -8.4% |
| 2019/5 | 79.01 | +9.1% |
| 2018/5 | 72.4 | +34.4% |
| 2017/5 | 53.87 | -14.3% |
| 2016/5 | 62.87 | -9.0% |
| 2015/5 | 69.07 | -0.5% |
| 2014/5 | 69.42 | +48.7% |
| 2013/5 | 46.7 | +34.9% |
| 2012/5 | 34.62 | +2.5% |
| 2011/5 | 33.79 | - |