| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 33.0 | -4.7% |
| 2023/12 | 34.6 | -6.2% |
| 2022/12 | 36.9 | -5.8% |
| 2021/12 | 39.2 | +35.5% |
| 2020/12 | 28.9 | +23.1% |
| 2019/12 | 23.5 | -10.3% |
| 2018/12 | 26.2 | +7.3% |
| 2017/12 | 24.4 | -6.4% |
| 2016/12 | 26.1 | +22.0% |
| 2015/12 | 21.4 | +1.9% |
| 2014/12 | 21.0 | +9.7% |
| 2013/12 | 19.1 | -4.6% |
| 2012/12 | 20.1 | +0.8% |
| 2011/12 | 19.9 | -3.4% |
| 2010/12 | 20.6 | - |