| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 46.2 | -4.2% |
| 2023/12 | 48.3 | -48.4% |
| 2022/12 | 93.5 | +231.9% |
| 2021/12 | 28.2 | +13.2% |
| 2020/12 | 24.9 | -3.1% |
| 2019/12 | 25.7 | -22.1% |
| 2018/12 | 33.0 | +13.2% |
| 2017/12 | 29.1 | -33.1% |
| 2016/12 | 43.5 | +16.3% |
| 2015/12 | 37.4 | +13.6% |
| 2014/12 | 33.0 | -11.7% |
| 2013/12 | 37.3 | +42.0% |
| 2012/12 | 26.3 | +14.0% |
| 2011/12 | 23.1 | +14.3% |
| 2010/12 | 20.2 | - |