That's about 1.4 million families, a group that in 2004 had an average real income of nearly $750,000.
Real income actually fell on average for the five years to September 1978.
From 1973 to 1996, real incomes for those in the same group fell 2 percent.
My books are not particularly popular in those fields, but that's real income.
Workers' real income is substantially higher than a year ago.
Real personal income for all but the wealthy continues to fall.
This results in low levels of per capita real income.
Oil prices were declining, they note, and Americans had more real income than before.
What forces fix the level of real income at Y 1?
"This range translates into a 40 percent difference in the level of real income by the year 2000."