| β1 | β2 | β3 |
2020-01 | 3.823 | −1.530 | −0.438 |
2020-02 | 3.908 | −1.518 | −0.510 |
2020-03 | 3.938 | −1.497 | −0.341 |
2020-04 | 4.037 | −1.477 | −0.301 |
2020-05 | 4.045 | −1.456 | −0.354 |
2020-06 | 4.010 | −1.430 | −0.427 |
2020-07 | 4.018 | −1.412 | −0.555 |
2020-08 | 4.064 | −1.408 | −0.785 |
2020-09 | 4.063 | −1.412 | −0.875 |
2020-10 | 4.207 | −1.414 | −0.845 |
2020-11 | 4.252 | −1.408 | −1.095 |
2020-12 | 4.279 | −1.398 | −1.034 |