| (1a) | (1b) | (1c) | |
| GDP | 0.942*** | 0.949*** | 0.934*** |
| (0.009) | (0.010) | (0.008) | |
| POP65 | 0.868*** | 0.047 | 0.233*** |
| (0.050) | (0.084) | (0.072) | |
| POP14 | 0.384*** | ‒0.053 | 0.063 |
| (0.085) | (0.088) | (0.082) | |
| ABED | 0.061*** | 0.045 | 0.052 |
| (0.021) | (0.038) | (0.035) | |
| FLABOUR | 0.179*** | 0.204** | 0.326*** |
| (0.044) | (0.084) | (0.074) | |
| POPD | ‒0.050*** | 0.207 | ‒0.036* |
| (0.006) | (0.175) | (0.019) | |
| PUBE | ‒0.385*** | 0.246*** | 0.141** |
| (0.036) | (0.062) | (0.058) | |
| UNEMPLOY | ‒0.017 | 0.046*** | 0.041*** |
| (0.012) | (0.010) | (0.011) | |
| DCOVER | ‒0.263*** | ‒0.072* | |
| (0.019) | (0.043) | ||
| TIME | 0.262*** | 0.280*** | 0.290*** |
| (0.034) | (0.047) | (0.033) | |
| R2 | 0.968 | 0.688 | 0.927 |
| Observations | 443 | 443 | 443 |
| Specification tests (p-value): | |||
| F test | .000 | ||
| B-P test | .000 | ||
| Hausman test | .000 |