Mexico City 2 0. 4 5 M L N P E O P L E . 1 4 8 5 0 H A 1900 1950 2000 40 30 20 10 800 600 400 200 1900 1950 2000 40 30 20 10 800 600 400 200 1900 1950 2000 40 30 20 10 800…
