$0
$20
$40
$60
$80
$100
$120
1861
1866
1871
1876
1881
1886
1891
1896
1901
1906
1911
1916
1921
1926
1931
1936
1941
1946
1951
1956
1961
1966
1971
1976
1981
1986
1991
1996
2001
2006
2011
Nominal Real (2015 dollars)
1861–1944 US domestic first purchase price 1945–1985 Arabian Light posted at Ras Tanura 1986–2015 Brent Spot Source: Energy Information Administration