| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 16.2 | +19.7% |
| 2023/12 | 13.5 | -34.0% |
| 2022/12 | 20.5 | -11.0% |
| 2021/12 | 23.0 | -19.6% |
| 2020/12 | 28.6 | +19.8% |
| 2019/12 | 23.9 | -23.9% |
| 2018/12 | 31.4 | -19.9% |
| 2017/12 | 39.2 | -21.5% |
| 2016/12 | 50.0 | -2.8% |
| 2015/12 | 51.4 | +54.1% |
| 2014/12 | 33.4 | -13.0% |
| 2013/12 | 38.4 | -19.3% |
| 2012/12 | 47.5 | +19.9% |
| 2011/12 | 39.6 | -22.4% |
| 2010/12 | 51.1 | - |