| （単位：%） | 総還元性向 | 前年比（％） |
|---|---|---|
| 2025/5 | -109.6 | -18.0% |
| 2024/5 | -133.6 | +29.6% |
| 2023/5 | -103.1 | +33.0% |
| 2022/5 | -77.6 | +17.6% |
| 2021/5 | -66.0 | +21.6% |
| 2020/5 | -54.2 | -18.1% |
| 2019/5 | -66.2 | -17.7% |
| 2018/5 | -80.5 | -50.9% |
| 2017/5 | -163.8 | +69.5% |
| 2016/5 | -96.6 | -45.9% |
| 2015/5 | -178.5 | +19.3% |
| 2014/5 | -149.6 | +45.1% |
| 2013/5 | -103.1 | +45.2% |
| 2012/5 | -71.0 | -32.3% |
| 2011/5 | -105.0 | +20.6% |
| 2010/5 | -87.0 | - |