An Aging Population? One of the most dramatic demographic trends in the world today is the aging of the population: an increase in the proportion of senior citizens relative to the youth and working age population. The reasons for this trend, "the greying of society", are often complex. They include, or will include in the next decade or so, the tremendous impact of the "baby boomer" generation, increases in life expectancy, changes in fertility patterns and for many geographical locations, out-migration of the younger members of society.
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