| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 40.3 | +3.4% |
| 2023/12 | 38.9 | -7.6% |
| 2022/12 | 42.2 | -12.9% |
| 2021/12 | 48.4 | -41.2% |
| 2020/12 | 82.4 | -8.8% |
| 2019/12 | 90.3 | +52.8% |
| 2018/12 | 59.1 | +2.8% |
| 2017/12 | 57.4 | +2.1% |
| 2016/12 | 56.2 | -5.0% |
| 2015/12 | 59.2 | +30.1% |
| 2014/12 | 45.5 | -22.8% |
| 2013/12 | 59.0 | -18.5% |
| 2012/12 | 72.4 | +43.8% |
| 2011/12 | 50.3 | -22.4% |
| 2010/12 | 64.9 | - |