The Nighttime Lights of the World dataset contains the first satellite-based global inventory of human settlements, derived from nighttime data from the Defense Meteorological Satellite Program.
Above, we see a comparision between 1993 and 2003 South America.
The island that seem to have grown in the coast of Brazil in the period is, actually, a group of oil plataforms.
Images from all the continents, here.
Source: My Modern Met.