| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2025/5 | 60.25 | -2.3% |
| 2024/5 | 61.7 | -3.2% |
| 2023/5 | 63.75 | +3.4% |
| 2022/5 | 61.65 | -16.4% |
| 2021/5 | 73.73 | -36.9% |
| 2020/5 | 116.81 | +204.3% |
| 2019/5 | 38.38 | +8.4% |
| 2018/5 | 35.41 | +26.3% |
| 2017/5 | 28.02 | +68.6% |
| 2016/5 | 16.62 | +78.0% |
| 2015/5 | 9.33 | -16.2% |
| 2014/5 | 11.14 | -1.9% |
| 2013/5 | 11.36 | +325.6% |
| 2012/5 | 2.67 | -44.8% |
| 2011/5 | 4.84 | +4.1% |
| 2010/5 | 4.64 | - |