| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 27.1 | -2.0% |
| 2023/12 | 27.6 | -18.0% |
| 2022/12 | 33.7 | -0.4% |
| 2021/12 | 33.8 | -2.6% |
| 2020/12 | 34.7 | +37.0% |
| 2019/12 | 25.4 | +41.9% |
| 2018/12 | 17.9 | -6.5% |
| 2017/12 | 19.1 | -1.2% |
| 2016/12 | 19.3 | -18.5% |
| 2015/12 | 23.7 | +63.6% |
| 2014/12 | 14.5 | +2.9% |
| 2013/12 | 14.1 | -8.8% |
| 2012/12 | 15.5 | +1624.3% |
| 2011/12 | 0.9 | -72.3% |
| 2010/12 | 3.2 | - |