clipped from: freakonomics.blogs.nytimes.com Yes, we already know the facts — income inequality has been increasing since the 1970’s. But it can be easy to lose sight of just how important this has been. This presentation of the data — by Claudia Goldin and my former thesis advisor Larry Katz, really hits home:
Note: The figure plots the annual percentage growth rate in mean real family income by quintile and for the top 5 percent of families for 1947 to 1973 and 1973 to 2005. Incomes are converted to constant dollars using the Consumer Price Index Research Series (CPI-U-RS). The income concept used is the official U.S. Census Bureau measure of pre-tax, post-transfer money income.