Educate yourself.
interesting chart but really quite useless.
now please educate yourself.
the population of brazil is 192m
the pop of the USA is about 307m.
the pop of russia is about 150m.
now look at the figures and come back with a percentage- as that makes much more sense when trying to make this point.
the chart u are showing is mapping absolute numbers- which is ok, but it doesnt indicate if a place has a problem or not as its directly related to the population.