| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 37.7 | -15.6% |
| 2023/12 | 44.7 | -1.9% |
| 2022/12 | 45.6 | +43.9% |
| 2021/12 | 31.7 | +22.3% |
| 2020/12 | 25.9 | +1.5% |
| 2019/12 | 25.5 | -15.7% |
| 2018/12 | 30.3 | +7.5% |
| 2017/12 | 28.2 | -8.7% |
| 2016/12 | 30.9 | +20.6% |
| 2015/12 | 25.6 | +9.9% |
| 2014/12 | 23.3 | -19.3% |
| 2013/12 | 28.9 | -1.9% |
| 2012/12 | 29.4 | -6.8% |
| 2011/12 | 31.6 | +1.8% |
| 2010/12 | 31.0 | - |