| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2024/12 | 28.15 | -7.4% |
| 2023/12 | 30.39 | +6.5% |
| 2022/12 | 28.52 | +11.1% |
| 2021/12 | 25.67 | +1.5% |
| 2020/12 | 25.29 | -7.8% |
| 2019/12 | 27.44 | -22.2% |
| 2018/12 | 35.27 | +1.4% |
| 2017/12 | 34.77 | -10.5% |
| 2016/12 | 38.87 | -5.3% |
| 2015/12 | 41.02 | -19.2% |
| 2014/12 | 50.78 | -1.6% |
| 2013/12 | 51.59 | +38.8% |
| 2012/12 | 37.16 | +35.9% |
| 2011/12 | 27.35 | -3.2% |
| 2010/12 | 28.26 | - |