For most of the past 70 years, the U.S. economy has grown at a steady clip, generating perpetually higher incomes and wealth for American households. But since 2000, the story is starkly different. The past decade was the worst for the U.S. economy in modern times, a sharp reversal from a long period of prosperity. It was, according to a wide range of data, a lost decade for American workers. The decade began in a moment of triumphalism -- there was a current of thought among economists in 1999 that recessions were a thing of the past. By the end, there were two, bookends to a debt-driven expansion that was neither robust nor sustainable. There has been zero net job creation since December 1999. No previous decade going back to the 1940s had job growth of less than 20 percent. Economic output rose at its slowest rate of any decade since the 1930s as well. Middle-income households made less in 2008, when adjusted for inflation, than they did in 1999 -- and the number is sure to have declined further during a difficult 2009. The Aughts were the first decade of falling median incomes since figures were first compiled in the 1960s. And the net worth of American households ... has also declined when adjusted for inflation, compared with sharp gains in every previous decade since data were initially collected in the 1950s.