| （単位：%） | 総還元性向 | 前年比（％） |
|---|---|---|
| 2025/5 | -102.6 | -2.6% |
| 2024/5 | -105.3 | -1.4% |
| 2023/5 | -106.8 | -37.7% |
| 2022/5 | -171.5 | +335.2% |
| 2021/5 | -39.4 | -103.2% |
| 2020/5 | 1245.4 | -1636.4% |
| 2019/5 | -81.1 | -11.9% |
| 2018/5 | -92.0 | -13.5% |
| 2017/5 | -106.3 | -12.0% |
| 2016/5 | -120.8 | +9.7% |
| 2015/5 | -110.1 | +9.1% |
| 2014/5 | -100.9 | +33.8% |
| 2013/5 | -75.4 | -40.1% |
| 2012/5 | -126.0 | +7.0% |
| 2011/5 | -117.8 | +111.7% |
| 2010/5 | -55.6 | - |