| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 73.3 | +17.4% |
| 2023/12 | 62.5 | -8.8% |
| 2022/12 | 68.5 | -3.4% |
| 2021/12 | 70.9 | -27.6% |
| 2020/12 | 98.0 | +29.2% |
| 2019/12 | 75.8 | -11.0% |
| 2018/12 | 85.2 | -5.1% |
| 2017/12 | 89.7 | +0.9% |
| 2016/12 | 89.0 | -4.0% |
| 2015/12 | 92.7 | +63.4% |
| 2014/12 | 56.7 | -5.5% |
| 2013/12 | 60.1 | +30.9% |
| 2012/12 | 45.9 | +131.4% |
| 2011/12 | 19.8 | -12.0% |
| 2010/12 | 22.5 | - |