The Center on Budget and Policy Priorities has published Income Gaps Hit Record Levels In 2006; New Data Show Rich-Poor Gap Tripled Between 1979 and 2006, by Arloc Sherman:
New data from the CBO show that in 2006, the top 1% of households had a larger share of the nation’s after-tax income, and the middle and bottom fifths of households had smaller shares, than in any year since 1979, the first year the CBO data cover. As a result, the gaps in after-tax incomes between households in the top 1% and those in the middle and bottom fifths were the widest on record.
