Region | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | Total | Proportion population 2018 |
Alentejo | 6.32% | 6.46% | 6.74% | 7.51% | 6.88% | 7.54% | 7.53% | 7.21% |
Algarve | 2.03% | 1.97% | 1.99% | 2.71% | 3.33% | 3.21% | 2.58% | 4.49% |
Metropolitan area of Lisbon | 23.72% | 23.03% | 23.59% | 23.50% | 23.96% | 23.64% | 24.32% | 29.10% |
Metropolitan area of Porto | 24.70% | 25.34% | 24.41% | 22.68% | 27.30% | 26.81% | 23.44% | 17.61% |
Central region | 25.73% | 24.77% | 25.39% | 25.39% | 17.22% | 18.35% | 23.69% | 22.66% |
Northern region | 17.50% | 18.44% | 17.88% | 18.20% | 21.31% | 20.46% | 18.43% | 18.92% |