Depressed oil prices date back to 2014
Price of oil per barrel in U.S. dollars, January 2011–June 2020
Note: Daily oil prices are based on West Texas Intermediate (WTI) crude oil, Cushing, Oklahoma.
Center for American Progress
U.S. Energy Information Administration, "Cushing, OK WTI Spot Price FOB," available at https://www.eia.gov/dnav/pet/hist/RWTCD.htm (last accessed July 2020).