| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 68.1 | +5.5% |
| 2023/12 | 64.5 | -44.2% |
| 2022/12 | 115.7 | +289.0% |
| 2021/12 | 29.7 | +2.9% |
| 2020/12 | 28.9 | -1.2% |
| 2019/12 | 29.3 | -17.4% |
| 2018/12 | 35.4 | +12.2% |
| 2017/12 | 31.6 | -19.3% |
| 2016/12 | 39.1 | -16.2% |
| 2015/12 | 46.7 | -0.2% |
| 2014/12 | 46.8 | -28.7% |
| 2013/12 | 65.6 | +4.3% |
| 2012/12 | 62.9 | -3.3% |
| 2011/12 | 65.1 | -9.3% |
| 2010/12 | 71.8 | - |