U.S. third-quarter growth revised up to 5.0 percent

WASHINGTON, (Reuters) - The U.S. economy grew at its quickest pace in 11 years in the third quarter, the strongest sign yet that growth has decisively shifted into higher gear. The Commerce Department on Tuesday revised up its estimate of gross domestic product growth to a 5.0 percent annual pace from the 3.9 percent rate reported last month, citing stronger consumer and business spending than it had previously factored in. It was the fastest growth pace since the third quarter of 2003. GDP grow