In the 21st century, the populations of the world's nations will display large and long-lived changes in age structure. Many of these began with fertility change and are amplified by declining mortality and by migration within and between nations. Demography will matter in this century not by force of numbers, but by the pressures of waves of age structural change.
Many developing countries are in relatively early stages of fertility decline and will experience age waves for two or more generations. These waves create shifting flows of people into the key age...
In the 21st century, the populations of the world's nations will display large and long-lived changes in age structure. Many of these be...
In the 21st century, the populations of the world s nations will display large and long-lived changes in age structure. Many of these began with fertility change and are amplified by declining mortality and by migration within and between nations. Demography will matter in this century not by force of numbers, but by the pressures of waves of age structural change.
Many developing countries are in relatively early stages of fertility decline and will experience age waves for two or more generations. These waves create shifting flows of people into the key age...
In the 21st century, the populations of the world s nations will display large and long-lived changes in age structure. Many of these be...
