| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 43.4 | +42.7% |
| 2023/12 | 30.4 | +94.3% |
| 2022/12 | 15.7 | -19.6% |
| 2021/12 | 19.5 | -28.1% |
| 2020/12 | 27.1 | -39.1% |
| 2019/12 | 44.5 | -18.6% |
| 2018/12 | 54.6 | +9.0% |
| 2017/12 | 50.1 | -13.0% |
| 2016/12 | 57.6 | -12.6% |
| 2015/12 | 65.9 | -9.8% |
| 2014/12 | 73.0 | +61.6% |
| 2013/12 | 45.2 | +0.1% |
| 2012/12 | 45.2 | -37.4% |
| 2011/12 | 72.1 | -23.1% |
| 2010/12 | 93.8 | - |