| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 47.4 | -42.1% |
| 2023/12 | 81.9 | +54.1% |
| 2022/12 | 53.1 | -21.1% |
| 2021/12 | 67.3 | +11.2% |
| 2020/12 | 60.5 | -8.5% |
| 2019/12 | 66.2 | +1.2% |
| 2018/12 | 65.4 | -0.2% |
| 2017/12 | 65.5 | -14.8% |
| 2016/12 | 76.9 | -2.1% |
| 2015/12 | 78.5 | +27.9% |
| 2014/12 | 61.4 | +101.4% |
| 2013/12 | 30.5 | -9.3% |
| 2012/12 | 33.6 | -15.2% |
| 2011/12 | 39.6 | -14.6% |
| 2010/12 | 46.4 | - |