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18 million workers produced more than one-fifth of U.S. gross domestic product in 2012（图）
U.S. gross product
2014/12/1
In 2012, knowledge intensive (KI) services industries--business, finance and information--produced $3.4 trillion in value-added output, more than one-fifth of the U.S. gross domestic product (GDP), an...
18 million workers produced more than one-fifth of U.S. gross domestic product in 2012
The United States Gross domestic product economic
2014/10/16
In 2012, knowledge intensive (KI) services industries--business, finance and information--produced $3.4 trillion in value-added output, more than one-fifth of the U.S. gross domestic product (GDP), an...