| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 1.3 | -33.2% |
| 2023/12 | 2.0 | -47.5% |
| 2022/12 | 3.8 | -64.3% |
| 2021/12 | 10.6 | +534.6% |
| 2020/12 | 1.7 | +906.9% |
| 2019/12 | 0.2 | -97.4% |
| 2018/12 | 6.4 | -78.8% |
| 2017/12 | 30.3 | -16.1% |
| 2016/12 | 36.1 | +3.7% |
| 2015/12 | 34.8 | -25.1% |
| 2014/12 | 46.4 | -9.7% |
| 2013/12 | 51.4 | -20.8% |
| 2012/12 | 65.0 | -15.0% |
| 2011/12 | 76.4 | +20.7% |
| 2010/12 | 63.3 | - |