| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 26.9 | +62.5% |
| 2023/12 | 16.6 | -3.8% |
| 2022/12 | 17.2 | -35.3% |
| 2021/12 | 26.6 | -48.0% |
| 2020/12 | 51.2 | -9.7% |
| 2019/12 | 56.7 | -3.4% |
| 2018/12 | 58.7 | -2.6% |
| 2017/12 | 60.3 | +1.8% |
| 2016/12 | 59.2 | -41.0% |
| 2015/12 | 100.3 | +22.7% |
| 2014/12 | 81.8 | +57.2% |
| 2013/12 | 52.0 | +2.0% |
| 2012/12 | 51.0 | +13.0% |
| 2011/12 | 45.1 | -13.3% |
| 2010/12 | 52.1 | - |