16 During the 1970s there was a rapid growth in the number of people under age 35 and over age 65. These demographic changes increased the normal rate of unemployment, retarded the growth of real income, and reduced the rate of saving. In contrast, during the 1980s, there will be a decline in the youthful (under age 25) segment of the population, while the 35-to-54 age group will expand rapidly. Other things constant, this will reduce the normal rate of unemployment, lead to a more rapid growth rate of income, and result in a higher rate of saving.