Nationally, the energy boom unleashed by fracking in 2012 led to 2.1 million jobs, generated nearly $75 billion in federal and state tax revenues, and contributed $283 billion to the U.S. GDP, according to a report last year by IHS, a research and consultancy firm. By 2020, this will grow to 3.3 million jobs, more than $125 billion in tax revenue, and more than $468 billion in GDP, it said.