See
U.S. Manufacturing: More Output, Fewer Workers at "Carpe Diem," the blog of Mark Perry. It has a link to a WSJ article by him and one quote is "
The average American factory worker today is responsible for more than $180,000 of annual output, triple the $60,000 in 1972." Here is an excerpt:
"International data compiled by the United Nations on global output from 1970-2009 show this success story. Excluding recession-related decreases in 2001 and 2008-09, America's manufacturing output has continued to increase since 1970. In every year since 2004, manufacturing output has exceeded $2 trillion (in constant 2005 dollars), twice the output produced in America's factories in the early 1970s. Taken on its own, U.S. manufacturing would rank today as the sixth largest economy in the world, just behind France and ahead of the United Kingdom, Italy and Brazil.
In 2009, the most recent full year for which international data are available, our manufacturing output was $2.155 trillion (including mining and utilities). That's more than 45% higher than China's, the country we're supposedly losing ground to. Despite recent gains in China and elsewhere, the U.S. still produced more than 20% of global manufacturing output in 2009.
The truth is that America still makes a lot of stuff, and we're making more of it than ever before. We're merely able to do it with a fraction of the workers needed in the past."
and
"Our world-class agriculture sector provides a great model for how to think about the evolution of U.S. manufacturing. The U.S. produces more agricultural output today—with only 2.6% of our work force involved in farming—than we did 100 years ago, when farming jobs represented almost 40% of the labor force. Likewise, we're able to produce twice as much manufacturing output today as in the 1970s, with about seven million fewer workers. That means yesterday's farmhands and plant workers can become today's computer engineers, medical doctors and financial managers."
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