While per-capita, disposable income has increased 469% since 1972 it has only increased moderately when considering inflation. In 1972, disposable personal income was determined to be $4,129; $19,385 in 2005 dollars. In 2005, disposable personal income was, however, $27,640, showing a moderate 43% increase. Since 1990, household income has fallen slightly, but this does not take into account the decrease in average household size.