| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 44.4 | -28.6% |
| 2023/12 | 62.2 | +0.4% |
| 2022/12 | 62.0 | -13.4% |
| 2021/12 | 71.6 | +88.9% |
| 2020/12 | 37.9 | -20.3% |
| 2019/12 | 47.6 | -15.8% |
| 2018/12 | 56.5 | -24.0% |
| 2017/12 | 74.3 | +14.6% |
| 2016/12 | 64.8 | -26.8% |
| 2015/12 | 88.6 | +94.7% |
| 2014/12 | 45.5 | -0.1% |
| 2013/12 | 45.5 | -21.3% |
| 2012/12 | 57.9 | -23.9% |
| 2011/12 | 76.0 | -5.6% |
| 2010/12 | 80.5 | - |