| Variable | Coefficient values | t-statistic | Probability |
| g0, constant | 0.46 | 13.0 | 0.00 |
| g1, direct tax rate | −0.68 | −8.54 | 0.00 |
| g2, indirect tax rate | 0.22 | 1.38 | 0.17 |
| g3, environmental tax rate | 0.29 | 0.78 | 0.44 |
| g4, rate of growth of GDP | 0.11 | 1.26 | 0.32 |
| g5, median age | −0.00 | −0.50 | 0.34 |
| g6, employment in agriculture as a percentage of population | 0.71 | 6.56 | 0.00 |
| g7, investment to GDP | −0.22 | −2.90 | 0.00 |
| g8, unemployment rate | 0.08 | 1.76 | 0.31 |
| g9, inflation rate | 0.05 | 0.17 | 0.26 |
| g10, years of schooling | 0.03 | 0.27 | 0.29 |
| g11,GDP per capita | 1.21E−06 | 1.69 | 0.09 |
| g12, social security contributions to GDP | −0.60 | −7.31 | 0.00 |
| R2 = 0.86, F-statistic = 189.3 (0.00) |
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