| 2015.10.24 | 18.00% | 17.50% | −0.50% | 16.00% | 15.50% | −0.50% |
| 2016.03.01 | 17.50% | 17.00% | −0.50% | 15.50% | 15.00% | −0.50% |
| 2018.04.25 | 17.00% | 16.00% | −1.00% | 15.00% | 14.00% | −1.00% |
| 2018.07.05 | 16.00% | 15.50% | −0.50% | 14.00% | 13.50% | −0.50% |
| 2018.10.15 | 15.50% | 14.50% | −1.00% | 13.50% | 12.50% | −1.00% |
| 2019.01.15 | 14.50% | 14.00% | −0.50% | 12.50% | 12.00% | −0.50% |
| 2019.01.25 | 14.00% | 13.50% | −0.50% | 12.00% | 11.50% | −0.50% |
| 2019.09.16 | 13.50% | 13.00% | −0.50% | 11.50% | 11.00% | −0.50% |
| 2020.01.06 | 13.00% | 12.50% | −0.50% | 11.00% | 10.50% | −0.50% |