| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 64.5 | -6.2% |
| 2023/12 | 68.8 | +11.1% |
| 2022/12 | 61.9 | +14.7% |
| 2021/12 | 54.0 | -22.6% |
| 2020/12 | 69.8 | -0.8% |
| 2019/12 | 70.3 | -6.6% |
| 2018/12 | 75.3 | -22.0% |
| 2017/12 | 96.6 | +47.7% |
| 2016/12 | 65.4 | +11.5% |
| 2015/12 | 58.6 | -4.4% |
| 2014/12 | 61.4 | -3.5% |
| 2013/12 | 63.6 | -9.6% |
| 2012/12 | 70.3 | +0.1% |
| 2011/12 | 70.3 | -10.5% |
| 2010/12 | 78.5 | - |