| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 5.9 | -40.0% |
| 2023/12 | 9.8 | +4.6% |
| 2022/12 | 9.4 | -27.2% |
| 2021/12 | 12.9 | -8.3% |
| 2020/12 | 14.1 | -3.2% |
| 2019/12 | 14.5 | -46.1% |
| 2018/12 | 27.0 | +16.3% |
| 2017/12 | 23.2 | -16.1% |
| 2016/12 | 27.6 | +15.9% |
| 2015/12 | 23.8 | +36.8% |
| 2014/12 | 17.4 | -1.5% |
| 2013/12 | 17.7 | +35.0% |
| 2012/12 | 13.1 | -6.8% |
| 2011/12 | 14.1 | -11.7% |
| 2010/12 | 15.9 | - |