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"Consider the manufacturing industry. Most Americans take it as fact that manufacturing jobs have decreased over the past 30 years. However, that is not fully accurate. Chart 1 shows manufacturing employment for union and non-union workers. Unionized manufacturing jobs fell by 75 percent between 1977 and 2008. Non-union manufacturing employment increased by 6 percent over that time. In the aggregate, only unionized manufacturing jobs have disappeared from the economy. As a result, collective bargaining coverage fell from 38 percent of manufacturing workers to 12 percent over those years."