| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 31.3 | +0.2% |
| 2023/12 | 31.2 | -18.0% |
| 2022/12 | 38.1 | -22.3% |
| 2021/12 | 49.1 | -7.9% |
| 2020/12 | 53.3 | -25.0% |
| 2019/12 | 71.1 | +107.0% |
| 2018/12 | 34.3 | -12.4% |
| 2017/12 | 39.2 | -6.6% |
| 2016/12 | 41.9 | -17.2% |
| 2015/12 | 50.6 | +248.9% |
| 2014/12 | 14.5 | -5.2% |
| 2013/12 | 15.3 | -44.8% |
| 2012/12 | 27.7 | -9.7% |
| 2011/12 | 30.7 | +49.6% |
| 2010/12 | 20.5 | - |