| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 40.4 | +11.3% |
| 2023/12 | 36.3 | -12.6% |
| 2022/12 | 41.5 | -39.4% |
| 2021/12 | 68.5 | -24.9% |
| 2020/12 | 91.2 | +64.2% |
| 2019/12 | 55.6 | -13.0% |
| 2018/12 | 63.9 | -15.0% |
| 2017/12 | 75.1 | -30.0% |
| 2016/12 | 107.3 | +73.8% |
| 2015/12 | 61.7 | +33.4% |
| 2014/12 | 46.3 | -20.9% |
| 2013/12 | 58.5 | +6.7% |
| 2012/12 | 54.8 | +61.5% |
| 2011/12 | 34.0 | -30.3% |
| 2010/12 | 48.7 | - |