"from pages 30-31 of my Mercatus Center colleague Daniel Griswold’s excellent 2009 volume, Mad About Trade (footnotes excluded):
In the past four decades, during a time of expanding trade and globalization, the U.S. workforce and total employment have each roughly doubled…. Since 1970, the number of people employed in the U.S. economy has increased at an average annual rate of 2.22 percent, virtually the same as the 2.25 percent average annual growth in the labor force. Despite fears of lost jobs from trade, total employment in the U.S. economy during the recession year of 2008 was still 8.4 million workers higher than during the 2001 recession, 27.6 million more than during the 1991 recession, and 45.8 million more than the 1981-82 downturn.
Nor is there any long-term, upward trend in the unemployment rate. In fact, even counting the recession year of 2008, the average unemployment rate during the decade of the 2000s has been 5.1 percent. That rate compares to an average jobless rate of 5.8 percent in the go-go 1990s and 7.3 percent in the 1980s. After decades of demographic upheaval, technological transformations, rising levels of trade, and recessions and recoveries, the U.S. economy has continued to add jobs, and the unemployment rate shows no long-term trend upward. Obviously, an increasingly globalized U.S. economy is perfectly compatible with a growing number of jobs and full employment."
From the comments
""the share of US households with incomes of $100,000 or more (in 2015 dollars) reached a record high of 26.4% last year, which is more than triple the share of households in 1967 with that level of income. At the same time, the shares of US households in both middle-income ($35,000 to $100,000) and low-income (below $35,000) groups fell."