| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 17.5 | -14.0% |
| 2023/12 | 20.3 | +4.8% |
| 2022/12 | 19.4 | +27.9% |
| 2021/12 | 15.1 | +11.2% |
| 2020/12 | 13.6 | -11.7% |
| 2019/12 | 15.4 | -4.5% |
| 2018/12 | 16.1 | -3.3% |
| 2017/12 | 16.7 | -15.7% |
| 2016/12 | 19.8 | +23.4% |
| 2015/12 | 16.1 | +26.2% |
| 2014/12 | 12.7 | -6.2% |
| 2013/12 | 13.6 | -22.6% |
| 2012/12 | 17.5 | +0.9% |
| 2011/12 | 17.4 | +23.3% |
| 2011/1 | 14.1 | - |