Source: Progressive Policy Institute The Numbers: U.S. Share of World Imports – 2006: 15.2% 2007: 14.0% 2008: 13.1% 2009: 12.5%   What They Mean: So the national shopping binge comes to its end. With unemployment up, home values down and retirement accounts withered, Americans are once more putting money in the bank. The Commerce Department’s [...]