this source this source this source this source this source they earn less money while needing more this source this source These census stats this source this source this source this source this source this source this source Disabled in Action Census Stats this source this source this source this source this source this source These census stats this source this source this source this source this source this source this source this source this source this source this statistic this source this source this source this source this source this source this source this source this source this source this source this source this source this source Facts About Disability in the U.S. Population. numbers this source