| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 35.7 | +15.1% |
| 2023/12 | 31.0 | +76.3% |
| 2022/12 | 17.6 | +7.0% |
| 2021/12 | 16.4 | -15.3% |
| 2020/12 | 19.4 | -31.0% |
| 2019/12 | 28.1 | -20.5% |
| 2018/12 | 35.3 | -27.9% |
| 2017/12 | 49.0 | -41.2% |
| 2016/12 | 83.3 | -14.2% |
| 2015/12 | 97.1 | +20.7% |
| 2014/12 | 80.4 | -15.4% |
| 2013/12 | 95.1 | -34.1% |
| 2012/12 | 144.3 | -17.3% |
| 2011/12 | 174.5 | +30.2% |
| 2010/12 | 134.0 | - |