| DEレシオ（％） | 前年比（％） | |
|---|---|---|
| 2024/12 | 74.03 | -3.1% |
| 2023/12 | 76.38 | +2.2% |
| 2022/12 | 74.76 | +24.6% |
| 2021/12 | 59.98 | +6.1% |
| 2020/12 | 56.56 | -14.5% |
| 2019/12 | 66.13 | -7.6% |
| 2018/12 | 71.58 | +6.4% |
| 2017/12 | 67.31 | +8.5% |
| 2016/12 | 62.04 | +11.7% |
| 2015/12 | 55.57 | +5.5% |
| 2014/12 | 52.67 | +1.6% |
| 2013/12 | 51.86 | +4.3% |
| 2012/12 | 49.73 | -15.0% |
| 2011/12 | 58.48 | +17.1% |
| 2010/12 | 49.95 | - |