In the twentieth century, all developed nations began to undergo unprecedented demographic changes, as their birth rates declined, and life expectancies increased significantly --an average of thirty years in less than a century. These developments have caused major transformations in the composition of populations in these countries, especially in terms of the proportions of the various age groups. While the age groups of children and adolescents have decreased, those of elderly persons aged 65 and over, have increased.
Consistent with the situation in other developed nations, the...
In the twentieth century, all developed nations began to undergo unprecedented demographic changes, as their birth rates declined, and life expecta...
In the twentieth century, all developed nations began to undergo unprecedented demographic changes, as their birth rates declined, and life expectancies increased significantly --an average of thirty years in less than a century. These developments have caused major transformations in the composition of populations in these countries, especially in terms of the proportions of the various age groups. While the age groups of children and adolescents have decreased, those of elderly persons aged 65 and over, have increased.
Consistent with the situation in other developed nations, the...
In the twentieth century, all developed nations began to undergo unprecedented demographic changes, as their birth rates declined, and life expecta...
