| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 43.8 | +20.6% |
| 2023/12 | 36.3 | +9.2% |
| 2022/12 | 33.3 | +85.8% |
| 2021/12 | 17.9 | -5.9% |
| 2020/12 | 19.0 | +2.8% |
| 2019/12 | 18.5 | -26.2% |
| 2018/12 | 25.1 | +37.9% |
| 2017/12 | 18.2 | -26.8% |
| 2016/12 | 24.8 | +35.3% |
| 2015/12 | 18.3 | -13.2% |
| 2014/12 | 21.1 | -19.5% |
| 2013/12 | 26.2 | +15.6% |
| 2012/12 | 22.7 | +21.4% |
| 2011/12 | 18.7 | -4.9% |
| 2010/12 | 19.7 | - |