| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 29.5 | -22.0% |
| 2023/12 | 37.8 | -16.8% |
| 2022/12 | 45.4 | -9.3% |
| 2021/12 | 50.1 | -10.8% |
| 2020/12 | 56.2 | -2.0% |
| 2019/12 | 57.3 | -9.1% |
| 2018/12 | 63.0 | -29.3% |
| 2017/12 | 89.1 | -10.7% |
| 2016/12 | 99.8 | +262.5% |
| 2015/12 | 27.5 | +72.9% |
| 2014/12 | 15.9 | +18.5% |
| 2013/12 | 13.4 | -80.4% |
| 2012/12 | 68.6 | +28.8% |
| 2011/12 | 53.3 | -17.8% |
| 2010/12 | 64.8 | - |