| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 14.8 | -32.0% |
| 2023/12 | 21.7 | -24.8% |
| 2022/12 | 28.9 | -11.0% |
| 2021/12 | 32.4 | -15.4% |
| 2020/12 | 38.3 | -13.6% |
| 2019/12 | 44.4 | -17.2% |
| 2018/12 | 53.6 | +15.7% |
| 2017/12 | 46.3 | -26.8% |
| 2016/12 | 63.3 | +32.7% |
| 2015/12 | 47.7 | +8.3% |
| 2014/12 | 44.1 | +21.1% |
| 2013/12 | 36.4 | -18.5% |
| 2012/12 | 44.7 | -18.3% |
| 2011/12 | 54.7 | -9.3% |
| 2010/12 | 60.4 | - |