| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 68.5 | -4.0% |
| 2023/12 | 71.4 | -3.9% |
| 2022/12 | 74.3 | +5.9% |
| 2021/12 | 70.2 | +15.0% |
| 2020/12 | 61.0 | +7.5% |
| 2019/12 | 56.7 | +9.7% |
| 2018/12 | 51.7 | +1.1% |
| 2017/12 | 51.1 | +2.0% |
| 2016/12 | 50.1 | -22.4% |
| 2015/12 | 64.5 | +13.7% |
| 2014/12 | 56.8 | -12.6% |
| 2013/12 | 65.0 | +11.4% |
| 2012/12 | 58.3 | -16.0% |
| 2011/12 | 69.4 | +25.7% |
| 2010/12 | 55.2 | - |