| （単位：%） | 総還元性向 | 前年比（％） |
|---|---|---|
| 2025/5 | -47.2 | -3.1% |
| 2024/5 | -48.7 | -11.5% |
| 2023/5 | -55.0 | +5.5% |
| 2022/5 | -52.2 | +7.3% |
| 2021/5 | -48.6 | -52.2% |
| 2020/5 | -101.6 | -28.7% |
| 2019/5 | -142.6 | +162.0% |
| 2018/5 | -54.4 | -43.8% |
| 2017/5 | -96.8 | +60.4% |
| 2016/5 | -60.3 | -17.8% |
| 2015/5 | -73.4 | +61.9% |
| 2014/5 | -45.3 | -58.7% |
| 2013/5 | -109.8 | +115.5% |
| 2012/5 | -51.0 | -20.6% |
| 2011/5 | -64.2 | - |