Natural and migratory population change in Porto (2009-2016) Source:... | Download Scientific Diagram
![Exterior view on the cathedral in the old town of Porto, Portugal, 05 March 2008. Porto is Portugal's second-biggest city with some 330,000 inhabitants. Photo: Federico Gambarini Stock Photo - Alamy Exterior view on the cathedral in the old town of Porto, Portugal, 05 March 2008. Porto is Portugal's second-biggest city with some 330,000 inhabitants. Photo: Federico Gambarini Stock Photo - Alamy](https://c8.alamy.com/comp/D4D40R/exterior-view-on-the-cathedral-in-the-old-town-of-porto-portugal-05-D4D40R.jpg)
Exterior view on the cathedral in the old town of Porto, Portugal, 05 March 2008. Porto is Portugal's second-biggest city with some 330,000 inhabitants. Photo: Federico Gambarini Stock Photo - Alamy
![PORTO, PORTUGAL - SEPTEMBER 15: People Protesting Against Government Spending Cuts And Tax Rises In Aliados Square, Porto On September 15, 2012. Stock Photo, Picture And Royalty Free Image. Image 15246216. PORTO, PORTUGAL - SEPTEMBER 15: People Protesting Against Government Spending Cuts And Tax Rises In Aliados Square, Porto On September 15, 2012. Stock Photo, Picture And Royalty Free Image. Image 15246216.](https://previews.123rf.com/images/dinozzaver/dinozzaver1209/dinozzaver120900035/15246216-porto-portugal-september-15-people-protesting-against-government-spending-cuts-and-tax-rises-in-alia.jpg)