| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 59.7 | +101.8% |
| 2023/12 | 29.6 | -20.9% |
| 2022/12 | 37.4 | -8.9% |
| 2021/12 | 41.0 | -21.7% |
| 2020/12 | 52.4 | +27.6% |
| 2019/12 | 41.1 | -8.7% |
| 2018/12 | 45.0 | -18.7% |
| 2017/12 | 55.4 | -7.4% |
| 2016/12 | 59.8 | +69.9% |
| 2015/12 | 35.2 | +12.7% |
| 2014/12 | 31.2 | +20.4% |
| 2013/12 | 25.9 | -17.5% |
| 2012/12 | 31.4 | -35.2% |
| 2011/12 | 48.5 | +191.0% |
| 2010/12 | 16.7 | - |