This line chart shows the change in median income in year 2000 dollars for married couples, nonmarried persons, whites, and blacks from 1962 to 2000. Income for married couples remained fairly level from 1962 to 1967 ($16,339- 17,390). It then sharply increased to 22,781 and continued to steadily rise with some slight ups downs until it leveled off at 31,188 in 2000. Income for nonmarried persons begins at 6,422, rises very slowly until ending at 12,715. For white persons, the 1967 amount of 9,806, rises to 13,802 in 1971. It keeps rising steadily without much fluctuation to 19,790 in 2000. The amount for black persons begins at 6,929, rises slowly, and ends with a sharp increase to 12,333 in 2000.