World Population by age in 1985

(in millions)
Developed countries Age Group Undeveloped countries
Males Females Males Females
85 83 0 - 9 475 446
88 87 10 - 19 428 413
97 94 20 - 29 318 314
84 84 30 - 39 227 234
73 74 40 - 49 153 164
63 73 50 - 59 124 120
41 53 60 - 69 73 80
30 41 70 - 79 36 40
8 21 80 and over 15 15

The table above was produced as the result of a world-wide survey in 1985.
It shows the different structures of the poulations, when divided into age-groups, in developed and undeveloped countries.
At that time, developed countries were those like Australia, Canada, France, Germany, USA and UK.
Undeveloped countries were mainly those of Latin America, Africa, China, Middle and Far East.