The ageing of the American population and the retirement of the baby boom generation will place financial strains on Social Security, public and private pensions, and on retirees' personal savings. Since the 1960s, birth rates have fallen and average life expectancy has increased. Consequently, the number of workers relative to the number of retirees is projected to decline, and retirees will have to stretch their savings and other assets over longer periods of retirement than their parents and grandparents experienced. This book presents data collected by the Census Bureau from 1969 through 2005 that describe how the demographic traits, employment patterns, and the sources and amounts of income of people 65 and older have changed over a period of nearly 40 years.