Table 20. Energy Prices by Sector and Source (1999 Dollars per Million Btu, Unless Otherwise Noted) United States
																							1999-
	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2020
Residential	13.17	13.84	13.92	13.33	13.09	13.04	12.93	13.02	13.02	13.05	13.09	13.16	13.16	13.15	13.18	13.25	13.33	13.39	13.44	13.50	13.52	13.59	0.1%
Primary Energy 1/	6.72	7.85	8.16	7.60	7.27	7.14	7.12	7.08	7.08	7.05	7.02	7.01	6.98	6.96	6.93	6.91	6.92	6.92	6.93	6.94	6.97	7.01	0.2%
Petroleum Products 2/	7.55	10.30	9.82	9.28	9.06	9.16	9.18	9.10	9.22	9.23	9.29	9.37	9.35	9.43	9.35	9.33	9.49	9.52	9.55	9.58	9.64	9.64	1.2%
Distillate Fuel	6.27	9.10	7.80	7.42	7.22	7.33	7.33	7.26	7.36	7.36	7.42	7.51	7.51	7.57	7.61	7.64	7.80	7.84	7.87	7.92	7.98	7.98	1.2%
Liquefied Petroleum Gas	10.36	12.94	13.88	12.96	12.72	12.79	12.83	12.77	12.93	12.94	13.02	13.07	13.04	13.16	12.80	12.66	12.83	12.84	12.84	12.86	12.88	12.87	1.0%
Natural Gas	6.52	7.19	7.74	7.17	6.82	6.65	6.63	6.61	6.60	6.58	6.54	6.53	6.50	6.47	6.46	6.44	6.44	6.44	6.45	6.47	6.50	6.55	0.0%
Electricity	23.60	23.62	23.43	22.69	22.47	22.33	21.90	22.07	21.90	21.87	21.86	21.88	21.85	21.77	21.79	21.94	22.01	22.08	22.13	22.17	22.12	22.17	-0.3%
Commercial	13.25	13.90	13.88	13.21	12.86	12.70	12.39	12.21	11.95	11.79	11.73	11.75	11.72	11.70	11.75	11.87	11.96	12.05	12.15	12.21	12.25	12.37	-0.3%
Primary Energy 1/	5.22	5.87	6.14	5.66	5.39	5.32	5.35	5.38	5.43	5.47	5.49	5.53	5.53	5.53	5.52	5.52	5.55	5.58	5.61	5.64	5.68	5.74	0.5%
Petroleum Products 2/	5.00	7.23	6.58	6.12	5.91	6.00	6.01	5.96	6.06	6.05	6.10	6.17	6.17	6.22	6.20	6.20	6.34	6.37	6.40	6.43	6.48	6.50	1.3%
Distillate Fuel	4.37	6.58	5.60	5.22	5.02	5.12	5.12	5.05	5.14	5.14	5.19	5.28	5.28	5.34	5.37	5.40	5.55	5.59	5.63	5.67	5.73	5.75	1.3%
Residual Fuel	2.63	4.36	4.15	3.76	3.62	3.64	3.64	3.64	3.66	3.66	3.68	3.69	3.71	3.72	3.74	3.75	3.77	3.79	3.80	3.82	3.84	3.85	1.8%
Natural Gas 3/	5.34	5.70	6.14	5.65	5.37	5.27	5.31	5.35	5.40	5.44	5.46	5.50	5.49	5.48	5.49	5.49	5.50	5.53	5.56	5.59	5.64	5.71	0.3%
Electricity	21.54	22.22	21.97	21.15	20.69	20.38	19.58	19.07	18.40	17.94	17.72	17.63	17.53	17.41	17.45	17.64	17.72	17.83	17.96	18.01	17.98	18.12	-0.8%
Industrial 4/	5.33	6.32	6.27	5.82	5.58	5.55	5.49	5.44	5.42	5.40	5.41	5.45	5.44	5.47	5.45	5.48	5.56	5.61	5.67	5.73	5.78	5.85	0.4%
Primary Energy	3.92	4.99	4.95	4.49	4.24	4.23	4.25	4.23	4.29	4.30	4.34	4.38	4.38	4.42	4.39	4.40	4.48	4.52	4.56	4.62	4.67	4.72	0.9%
Petroleum Products 2/	5.55	6.84	6.73	6.18	5.90	5.95	5.95	5.88	5.96	5.94	6.00	6.05	6.03	6.10	6.00	5.98	6.10	6.13	6.16	6.21	6.26	6.27	0.6%
Distillate Fuel	4.65	6.71	5.74	5.37	5.18	5.28	5.29	5.23	5.32	5.31	5.37	5.45	5.46	5.52	5.56	5.58	5.73	5.77	5.81	5.84	5.90	5.94	1.2%
Liquefied Petroleum Gas	8.50	8.24	9.07	8.14	7.86	7.91	7.94	7.84	7.94	7.91	7.97	8.01	7.97	8.10	7.73	7.61	7.75	7.78	7.79	7.82	7.84	7.83	-0.4%
Residual Fuel	2.78	4.09	3.88	3.49	3.35	3.36	3.36	3.37	3.38	3.39	3.41	3.42	3.44	3.45	3.47	3.48	3.50	3.52	3.53	3.55	3.57	3.58	1.2%
Natural Gas 5/	2.79	4.00	4.02	3.51	3.24	3.14	3.17	3.20	3.24	3.27	3.28	3.31	3.33	3.35	3.38	3.41	3.45	3.50	3.55	3.61	3.68	3.76	1.4%
Metallurgical Coal	1.65	1.66	1.66	1.63	1.61	1.60	1.59	1.58	1.57	1.56	1.55	1.54	1.53	1.52	1.51	1.51	1.49	1.48	1.47	1.46	1.45	1.44	-0.7%
Steam Coal	1.43	1.41	1.39	1.37	1.36	1.35	1.35	1.34	1.33	1.31	1.30	1.29	1.28	1.28	1.27	1.26	1.25	1.24	1.24	1.23	1.22	1.21	-0.8%
Electricity	13.09	13.66	13.56	13.11	12.94	12.83	12.34	12.03	11.61	11.37	11.25	11.24	11.14	11.07	11.10	11.20	11.27	11.34	11.45	11.50	11.51	11.62	-0.6%
Transportation	8.30	10.58	9.82	9.39	9.20	9.26	9.27	9.34	9.49	9.39	9.38	9.46	9.39	9.38	9.36	9.38	9.38	9.37	9.36	9.34	9.31	9.31	0.5%
Primary Energy	8.29	10.57	9.81	9.38	9.19	9.25	9.25	9.32	9.48	9.37	9.36	9.45	9.37	9.37	9.35	9.37	9.36	9.35	9.35	9.32	9.29	9.29	0.5%
Petroleum Products 2/	8.28	10.57	9.81	9.38	9.18	9.24	9.25	9.32	9.47	9.37	9.36	9.44	9.37	9.36	9.34	9.36	9.36	9.35	9.34	9.32	9.29	9.29	0.5%
Distillate Fuel 6/	8.22	10.45	9.37	8.94	8.79	8.92	8.89	8.81	8.85	8.84	8.87	8.94	8.94	8.96	8.97	8.96	9.05	9.05	9.04	9.01	8.98	8.98	0.4%
Jet Fuel 7/	4.70	6.57	5.58	5.17	5.07	5.20	5.25	5.24	5.31	5.33	5.39	5.47	5.46	5.51	5.55	5.63	5.75	5.80	5.82	5.84	5.87	5.88	1.1%
Motor Gasoline 8/	9.45	11.96	11.29	10.82	10.60	10.62	10.64	10.80	11.02	10.86	10.83	10.93	10.83	10.81	10.77	10.81	10.75	10.73	10.73	10.70	10.67	10.68	0.6%
Residual Fuel	2.46	3.74	3.60	3.21	3.07	3.10	3.10	3.12	3.13	3.14	3.16	3.18	3.19	3.21	3.22	3.24	3.25	3.27	3.29	3.30	3.32	3.33	1.5%
Liquid Petroleum Gas 9/	12.87	14.46	15.20	14.36	14.17	14.20	14.19	14.10	14.22	14.22	14.26	14.26	14.20	14.28	13.96	13.79	13.96	13.93	13.91	13.89	13.89	13.84	0.3%
Natural Gas 10/	7.02	7.94	7.81	7.24	6.91	6.78	6.80	6.85	6.91	6.96	7.00	7.04	7.07	7.10	7.13	7.14	7.17	7.19	7.21	7.24	7.27	7.32	0.2%
Ethanol (E85) 11/	14.42	16.92	18.87	18.17	19.04	19.00	19.12	19.08	19.03	18.97	18.88	19.00	19.03	19.07	19.12	19.19	19.24	19.31	19.14	19.21	19.28	19.36	1.4%
Methanol (M85) 12/	10.38	13.45	14.24	13.34	12.85	13.12	13.12	13.11	13.21	13.14	13.15	13.74	13.73	14.05	14.06	14.09	14.33	14.23	14.23	14.42	14.42	14.43	1.6%
Electricity	15.57	16.08	15.69	15.27	14.91	14.62	14.33	14.07	13.68	13.65	13.64	13.47	13.42	13.26	13.23	13.27	13.21	13.19	13.15	13.13	13.07	13.06	-0.8%
Average End-Use Energy	8.55	9.96	9.68	9.21	8.98	8.98	8.91	8.91	8.94	8.88	8.88	8.95	8.92	8.93	8.92	8.97	9.01	9.05	9.09	9.11	9.12	9.17	0.3%
Primary Energy	6.33	7.94	7.64	7.20	6.96	6.98	7.00	7.03	7.14	7.10	7.12	7.18	7.15	7.17	7.15	7.17	7.21	7.23	7.25	7.26	7.28	7.30	0.7%
Electricity	19.50	19.93	19.78	19.13	18.86	18.71	18.15	17.95	17.54	17.32	17.21	17.20	17.13	17.05	17.08	17.23	17.30	17.38	17.48	17.52	17.50	17.59	-0.5%
Electric Generators 13/
Fossil Fuel Average	1.49	1.73	1.70	1.61	1.55	1.53	1.52	1.51	1.49	1.50	1.51	1.54	1.56	1.58	1.61	1.64	1.68	1.72	1.75	1.79	1.82	1.86	1.1%
Petroleum Products	2.50	4.22	4.05	3.69