| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 57.1 | +23.0% |
| 2023/12 | 46.4 | -15.3% |
| 2022/12 | 54.8 | -20.6% |
| 2021/12 | 69.0 | -51.6% |
| 2020/12 | 142.4 | +96.3% |
| 2019/12 | 72.5 | +55.2% |
| 2018/12 | 46.7 | -2.4% |
| 2017/12 | 47.9 | -51.1% |
| 2016/12 | 97.9 | -10.8% |
| 2015/12 | 109.7 | +194.0% |
| 2014/12 | 37.3 | -3.8% |
| 2013/12 | 38.8 | -2.3% |
| 2012/12 | 39.7 | +42.7% |
| 2011/12 | 27.9 | +40.4% |
| 2010/12 | 19.8 | - |