Countreis population as compared to the USA (rounded).

#1 China - 1.3 Billion x4.3 USA
#2 India - 1.2 Billion x4 USA
#3 USA - 300 Million x1 USA
#4 Indonesia - 230 Million x0.79 USA
#5 Brazil - 200 Million x0.66 USA
#6 Pakistan - 180 Million x0.6 USA
#9 Russia - 140 Million x 0.46 USA
#11 Mexico - 120 Million x0.4 USA
#17 Iran - 80 Million x0.26 USA
#24 South Africa - 50 Million x0.16USA
#29 Ukraine - 45 Million x0.15 USA