| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 20.7 | -13.9% |
| 2023/12 | 24.1 | +38.4% |
| 2022/12 | 17.4 | -6.0% |
| 2021/12 | 18.5 | -7.8% |
| 2020/12 | 20.1 | -15.9% |
| 2019/12 | 23.9 | -12.3% |
| 2018/12 | 27.2 | -13.9% |
| 2017/12 | 31.6 | -35.2% |
| 2016/12 | 48.8 | -16.6% |
| 2015/12 | 58.6 | +75.7% |
| 2014/12 | 33.3 | -10.2% |
| 2013/12 | 37.1 | -47.4% |
| 2012/12 | 70.6 | -10.8% |
| 2011/12 | 79.2 | -24.5% |
| 2010/12 | 104.8 | - |