| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 46.1 | -0.3% |
| 2023/12 | 46.3 | -8.7% |
| 2022/12 | 50.6 | -3.3% |
| 2021/12 | 52.4 | -19.5% |
| 2020/12 | 65.1 | -1.5% |
| 2019/12 | 66.0 | -13.4% |
| 2018/12 | 76.3 | -3.3% |
| 2017/12 | 78.9 | -19.5% |
| 2016/12 | 98.0 | +137.9% |
| 2015/12 | 41.2 | +39.9% |
| 2014/12 | 29.4 | -20.6% |
| 2013/12 | 37.1 | -13.4% |
| 2012/12 | 42.8 | +72.0% |
| 2011/12 | 24.9 | -0.3% |
| 2010/12 | 25.0 | - |