| Α | β | R2 |
All years | 2.556 | 4.436 | 15.89% |
(3.971) | (4.620) |
| |
2015 | 3.217 | 3.949 | 4.22% |
(4.188) | (0.856)* |
| |
2016 | 2.686 | 3.752 | 19.08% |
(3.188) | (2.203)** |
| |
2017 | 2.195 | 4.276 | 43.54% |
(4.236) | (1.856)** |
| |
2018 | 2.454 | 5.108 | 36.63% |
(3.488) | (2.951) |
| |
2019 | 2.187 | 4.153 | 47.45% |
(4.834) | (2.253)*** |
| |
2020 | 4.424 | 3.908 | 46.30% |
(3.389) | (3.308) |
|