| http://www.w3.org/ns/prov#value | - Tap image to zoomPercentage change in US employment by occupation, 1979???2009(David Autor, MIT Department of Economics and National Bureau of Economic Research)Notice that the three left-most occupation categories, the skilled trades including managers, professionals and technicians, have either held on to or slightly increased their ranks, even during the 2007-2009 recession.
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