| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2024/12 | 53.08 | +0.9% |
| 2023/12 | 52.58 | -8.3% |
| 2022/12 | 57.37 | -14.5% |
| 2021/12 | 67.11 | +4.6% |
| 2020/12 | 64.17 | -7.1% |
| 2019/12 | 69.1 | +0.2% |
| 2018/12 | 68.93 | -5.2% |
| 2017/12 | 72.69 | -11.7% |
| 2016/12 | 82.31 | -5.8% |
| 2015/12 | 87.38 | +2.5% |
| 2014/12 | 85.25 | +3.1% |
| 2013/12 | 82.67 | -2.5% |
| 2012/12 | 84.77 | +6.0% |
| 2011/12 | 79.99 | +0.4% |
| 2010/12 | 79.7 | - |