| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2024/12 | 33.03 | -4.7% |
| 2023/12 | 34.64 | -6.2% |
| 2022/12 | 36.92 | -5.8% |
| 2021/12 | 39.19 | +35.5% |
| 2020/12 | 28.91 | +23.1% |
| 2019/12 | 23.5 | -10.3% |
| 2018/12 | 26.19 | +7.3% |
| 2017/12 | 24.4 | -6.4% |
| 2016/12 | 26.08 | +22.0% |
| 2015/12 | 21.38 | +1.9% |
| 2014/12 | 20.99 | +9.7% |
| 2013/12 | 19.14 | -4.6% |
| 2012/12 | 20.07 | +0.8% |
| 2011/12 | 19.91 | -3.4% |
| 2010/12 | 20.61 | - |