| （単位：%） | DEレシオ（％） | 前年比（％） |
|---|---|---|
| 2024/12 | 60.4 | -1.3% |
| 2023/12 | 61.2 | +36.4% |
| 2022/12 | 44.9 | +8.8% |
| 2021/12 | 41.2 | +9.9% |
| 2020/12 | 37.5 | -9.3% |
| 2019/12 | 41.4 | -24.9% |
| 2018/12 | 55.1 | -0.2% |
| 2017/12 | 55.2 | -12.1% |
| 2016/12 | 62.8 | +107.7% |
| 2015/12 | 30.2 | +15.2% |
| 2014/12 | 26.2 | +24.0% |
| 2013/12 | 21.2 | -35.6% |
| 2012/12 | 32.8 | +38.1% |
| 2011/12 | 23.8 | -30.3% |
| 2010/12 | 34.1 | - |