Urbanization level and GDP per capita of the 60–70% and 70–80% groups, 1980.

The specific countries and developmental indicators are detailed to explain the big gap in the two groups. UL, urbanization level (%); GDPP, GDP per capita (international dollars); POPU, total population. The average GDP per capita is calculated by taking account of the population weight in the same group. It is noted that some countries in Latin America, such as Brazil and Colombia, bring down the averages of GDP per capita in the 60–70% group.