| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2025/5 | 92.1 | +50.7% |
| 2024/5 | 61.1 | +52.0% |
| 2023/5 | 40.2 | -1.9% |
| 2022/5 | 41.0 | +24.0% |
| 2021/5 | 33.1 | -17.0% |
| 2020/5 | 39.8 | +2.8% |
| 2019/5 | 38.8 | -8.1% |
| 2018/5 | 42.2 | -5.3% |
| 2017/5 | 44.6 | +97.7% |
| 2016/5 | 22.5 | -64.2% |
| 2015/5 | 62.9 | -45.3% |
| 2014/5 | 114.9 | -5.2% |
| 2013/5 | 121.2 | +23.8% |
| 2012/5 | 97.9 | +34.7% |
| 2011/5 | 72.7 | -15.7% |
| 2010/5 | 86.3 | - |