This interactive visualization presents population data and projections for the world's 590 most populated, showing how their populations compare to one another over time.
The data shows cities relative and actual populations between 1950 and 2010, and also includes projections for 2015, 2020, 2025 and 2050.
For each time period, cities are stacked in order of most to least populous, showing how some cities have risen, fallen or rebounded over the last 60 years.
FULL STORY: Evolution of the population in the 590 most populated cities
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