US 20% of World GDP in 1980 Grows to 29%

According to Newsweek Magazine’s cover story:

“In 1980, the U.S. share of global GDP was 20 percent. Today it is 29 percent. We lead the world in technology and research. Our firms have found enormous success in new markets overseas. We continue to generate new products, new brands, new companies and new industries.” Fareed Zakaria Newsweek June 11, 2007 issue