| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 66.6 | +29.3% |
| 2023/12 | 51.5 | +28.4% |
| 2022/12 | 40.1 | -36.1% |
| 2021/12 | 62.8 | -27.9% |
| 2020/12 | 87.1 | +7.1% |
| 2019/12 | 81.3 | -4.1% |
| 2018/12 | 84.8 | +169.8% |
| 2017/12 | 31.4 | -6.7% |
| 2016/12 | 33.7 | -22.0% |
| 2015/12 | 43.2 | -2.2% |
| 2014/12 | 44.2 | +533.4% |
| 2013/12 | 7.0 | -53.2% |
| 2012/12 | 14.9 | +37.3% |
| 2011/12 | 10.9 | -50.0% |
| 2010/12 | 21.7 | - |