| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 57.8 | -5.6% |
| 2023/12 | 61.3 | -2.9% |
| 2022/12 | 63.1 | +17.6% |
| 2021/12 | 53.7 | -3.2% |
| 2020/12 | 55.4 | -18.3% |
| 2019/12 | 67.9 | -15.3% |
| 2018/12 | 80.2 | +13.1% |
| 2017/12 | 70.9 | +1.7% |
| 2016/12 | 69.7 | -3.9% |
| 2015/12 | 72.6 | +68.5% |
| 2014/12 | 43.1 | +53.8% |
| 2013/12 | 28.0 | -3.2% |
| 2012/12 | 28.9 | -2.8% |
| 2011/12 | 29.8 | -9.7% |
| 2010/12 | 33.0 | - |