| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 25.8 | -18.3% |
| 2023/12 | 31.6 | -10.5% |
| 2022/12 | 35.3 | -12.1% |
| 2021/12 | 40.2 | -15.5% |
| 2020/12 | 47.6 | +17.1% |
| 2019/12 | 40.6 | -7.3% |
| 2018/12 | 43.8 | +37.6% |
| 2017/12 | 31.9 | +6.4% |
| 2016/12 | 30.0 | -11.9% |
| 2015/12 | 34.0 | +7.4% |
| 2014/12 | 31.6 | -14.6% |
| 2013/12 | 37.0 | -44.3% |
| 2012/12 | 66.5 | +20.6% |
| 2011/12 | 55.2 | +219.4% |
| 2010/12 | 17.3 | - |