| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 54.2 | -1.6% |
| 2023/12 | 55.1 | -5.7% |
| 2022/12 | 58.4 | -1.5% |
| 2021/12 | 59.3 | -4.8% |
| 2020/12 | 62.3 | +8.2% |
| 2019/12 | 57.6 | -12.4% |
| 2018/12 | 65.8 | -12.7% |
| 2017/12 | 75.3 | -27.9% |
| 2016/12 | 104.4 | -22.2% |
| 2015/12 | 134.2 | -16.6% |
| 2014/12 | 160.8 | +1590.4% |
| 2013/12 | 9.5 | -9.4% |
| 2012/12 | 10.5 | -14.2% |
| 2011/12 | 12.2 | +3.4% |
| 2010/12 | 11.8 | - |