https://www.worldenergynews.com/news/crude-oil-and-natgas-reserves-rise-2013-617230
U.S. Crude Oil and Natgas Reserves Rise in 2013
U.S. proven crude oil and lease condensate reserves increased 9.3 percent to 36.5 billion barrels in 2013, up from 33.4 billion barrels in 2012, the U.S.