| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 30.6 | +4.1% |
| 2023/12 | 29.4 | -7.2% |
| 2022/12 | 31.7 | +22.6% |
| 2021/12 | 25.8 | +41.0% |
| 2020/12 | 18.3 | -1.5% |
| 2019/12 | 18.6 | -1.2% |
| 2018/12 | 18.8 | -0.4% |
| 2017/12 | 18.9 | -5.9% |
| 2016/12 | 20.1 | -6.4% |
| 2015/12 | 21.4 | -5.2% |
| 2014/12 | 22.6 | +41.8% |
| 2013/12 | 16.0 | -4.7% |
| 2012/12 | 16.7 | -23.9% |
| 2011/12 | 22.0 | -20.6% |
| 2010/12 | 27.7 | - |