| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 47.6 | +6.3% |
| 2023/12 | 44.8 | +21.4% |
| 2022/12 | 36.9 | -7.6% |
| 2021/12 | 39.9 | -11.1% |
| 2020/12 | 44.9 | +20.0% |
| 2019/12 | 37.4 | +7.9% |
| 2018/12 | 34.7 | -4.4% |
| 2017/12 | 36.3 | +16.3% |
| 2016/12 | 31.2 | -4.9% |
| 2015/12 | 32.8 | +52.0% |
| 2014/12 | 21.6 | -4.5% |
| 2013/12 | 22.6 | -11.9% |
| 2012/12 | 25.7 | +66.3% |
| 2011/12 | 15.4 | +267.2% |
| 2010/12 | 4.2 | - |