| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 39.1 | +10.4% |
| 2023/12 | 35.4 | -6.1% |
| 2022/12 | 37.8 | -34.2% |
| 2021/12 | 57.4 | -18.8% |
| 2020/12 | 70.7 | +0.7% |
| 2019/12 | 70.2 | -14.4% |
| 2018/12 | 82.0 | +16.8% |
| 2017/12 | 70.2 | -21.1% |
| 2016/12 | 89.0 | -29.5% |
| 2015/12 | 126.2 | +25.7% |
| 2014/12 | 100.4 | +76.3% |
| 2013/12 | 57.0 | +123.7% |
| 2012/12 | 25.5 | -22.1% |
| 2011/12 | 32.7 | -25.8% |
| 2010/12 | 44.1 | - |