| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 32.9 | -19.9% |
| 2023/12 | 41.1 | -17.4% |
| 2022/12 | 49.8 | -16.3% |
| 2021/12 | 59.5 | -6.8% |
| 2020/12 | 63.8 | -3.8% |
| 2019/12 | 66.4 | -32.0% |
| 2018/12 | 97.5 | +180.3% |
| 2017/12 | 34.8 | +27.9% |
| 2016/12 | 27.2 | +0.9% |
| 2015/12 | 27.0 | -5.9% |
| 2014/12 | 28.7 | +6.4% |
| 2013/12 | 26.9 | -21.5% |
| 2012/12 | 34.3 | +16.2% |
| 2011/12 | 29.5 | +61.8% |
| 2010/12 | 18.2 | - |