| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 10.0 | -17.5% |
| 2023/12 | 12.1 | -9.4% |
| 2022/12 | 13.3 | -18.6% |
| 2021/12 | 16.4 | -6.7% |
| 2020/12 | 17.5 | +4.2% |
| 2019/12 | 16.8 | +115.1% |
| 2018/12 | 7.8 | -6.3% |
| 2017/12 | 8.4 | -6.4% |
| 2016/12 | 8.9 | -4.8% |
| 2015/12 | 9.4 | -3.8% |
| 2014/12 | 9.7 | -5.8% |
| 2013/12 | 10.3 | -35.3% |
| 2012/12 | 16.0 | -46.7% |
| 2011/12 | 29.9 | -8.4% |
| 2010/12 | 32.7 | - |