Table A2.  Approximate Heat Content of Petroleum Production, Imports, and Exports, 1949-2007                      (Million Btu per Barrel)
Year	Production		Imports					Exports
	Crude Oil 1	Natural Gas Plant Liquids	Crude Oil 1	Petroleum Products		Total		Crude Oil 1	Petroleum Products		Total
1949	5.800	4.544	5.952	6.261		6.059		5.800	5.651		5.692
1950	5.800	4.522	5.943	6.263		6.080		5.800	5.751		5.766
1951	5.800	4.495	5.938	6.265		6.075		5.800	5.753		5.762
1952	5.800	4.464	5.938	6.261		6.067		5.800	5.768		5.774
1953	5.800	4.450	5.924	6.268		6.052		5.800	5.732		5.742
1954	5.800	4.415	5.931	6.252		6.052		5.800	5.738		5.745
1955	5.800	4.406	5.924	6.234		6.040		5.800	5.765		5.768
1956	5.800	4.382	5.916	6.225		6.024		5.800	5.744		5.754
1957	5.800	4.369	5.918	6.219		6.023		5.800	5.774		5.780
1958	5.800	4.366	5.916	6.091		5.993		5.800	5.778		5.779
1959	5.800	4.311	5.916	6.142		6.020		5.800	5.830		5.829
1960	5.800	4.295	5.911	6.161		6.021		5.800	5.835		5.834
1961	5.800	4.283	5.900	6.102		5.991		5.800	5.833		5.832
1962	5.800	4.273	5.890	6.138		6.004		5.800	5.842		5.841
1963	5.800	4.264	5.894	6.126		6.002		5.800	5.841		5.840
1964	5.800	4.268	5.882	6.129		5.998		5.800	5.845		5.844
1965	5.800	4.264	5.872	6.123		5.997		5.800	5.742		5.743
1966	5.800	4.259	5.863	6.112		5.993		5.800	5.728		5.729
1967	5.800	4.232	5.838	6.128		5.999		5.800	5.758		5.777
1968	5.800	4.218	5.836	6.095		5.977		5.800	5.762		5.763
1969	5.800	4.170	5.825	6.093		5.974		5.800	5.713		5.714
1970	5.800	4.146	5.822	6.088		5.985		5.800	5.811		5.810
1971	5.800	4.117	5.824	6.062		5.961		5.800	5.775		5.775
1972	5.800	4.070	5.809	6.045		5.935		5.800	5.741		5.741
1973	5.800	4.049	5.817	5.983		5.897		5.800	5.752		5.752
1974	5.800	4.011	5.827	5.959		5.884		5.800	5.773		5.774
1975	5.800	3.984	5.821	5.935		5.858		5.800	5.747		5.748
1976	5.800	3.964	5.808	5.980		5.856		5.800	5.743		5.745
1977	5.800	3.941	5.810	5.908		5.834		5.800	5.796		5.797
1978	5.800	3.925	5.802	5.955		5.839		5.800	5.814		5.808
1979	5.800	3.955	5.810	5.811		5.810		5.800	5.864		5.832
1980	5.800	3.914	5.812	5.748		5.796		5.800	5.841		5.820
1981	5.800	3.930	5.818	5.659		5.775		5.800	5.837		5.821
1982	5.800	3.872	5.826	5.664		5.775		5.800	5.829		5.820
1983	5.800	3.839	5.825	5.677		5.774		5.800	5.800		5.800
1984	5.800	3.812	5.823	5.613		5.745		5.800	5.867		5.850
1985	5.800	3.815	5.832	5.572		5.736		5.800	5.819		5.814
1986	5.800	3.797	5.903	5.624		5.808		5.800	5.839		5.832
1987	5.800	3.804	5.901	5.599		5.820		5.800	5.860		5.858
1988	5.800	3.800	5.900	5.618		5.820		5.800	5.842		5.840
1989	5.800	3.826	5.906	5.641		5.833		5.800	5.869		5.857
1990	5.800	3.822	5.934	5.614		5.849		5.800	5.838		5.833
1991	5.800	3.807	5.948	5.636		5.873		5.800	5.827		5.823
1992	5.800	3.804	5.953	5.623		5.877		5.800	5.774		5.777
1993	5.800	3.801	5.954	5.620		5.883		5.800	5.777		5.779
1994	5.800	3.794	5.950	5.534		5.861		5.800	5.777		5.779
1995	5.800	3.796	5.938	5.483		5.855		5.800	5.740		5.746
1996	5.800	3.777	5.947	5.468		5.847		5.800	5.728		5.736
1997	5.800	3.762	5.954	5.469		5.862		5.800	5.726		5.734
1998	5.800	3.769	5.953	5.462		5.861		5.800	5.710		5.720
1999	5.800	3.744	5.942	5.421		5.840		5.800	5.684		5.699
2000	5.800	3.733	5.959	5.432		5.849		5.800	5.651		5.658
2001	5.800	3.735	5.976	5.443		5.862		5.800	5.751		5.752
2002	5.800	3.729	5.971	5.451		5.863		5.800	5.687		5.688
2003	5.800	3.739	5.970	5.438		5.857		5.800	5.739		5.740
2004	5.800	3.724	5.981	5.475		5.863		5.800	5.753		5.754
2005	5.800	3.724	5.977	5.474		5.845		5.800	5.741		5.743
2006	5.800	3.712	5.980	5.454	[R]	5.842	[R]	5.800	5.723	[R]	5.724	[R]
2007P	5.800	3.701	5.981	5.500		5.858		5.800	5.745		5.746
1Includes lease condensate. Note:  The values in this table are for gross heat contents.  See "Heat Content" in Glossary.  R=Revised.  P=Preliminary.   Sources:  See "Thermal Conversion Factor Source Documentation," which follows Table A6.