Table 4 Emissions to air of greenhouse gases. 1973-2003*

Greenhouse gas emissions. National figures

4	Emissions to air of greenhouse gases. 1973-2003*

	CO₂	CH₄	N₂O	HFK23	HFK32	HFK125	HFK134	HFK143	HFK152	HFK227	C₃F₈	CF₄	C₂F₆	SF₆	CO₂ equivalents


	Million tonnes	1 000 tonnes	1 000 tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Tonnes	Million tonnes
GWP ¹	1	21	310	11 700	650	2 800	1 300	3 800	140	2 900	7 000	6 500	9 200	23 900

1973	30	..	..	..	..	..	..		..			..	..	0	..
1974	28	..	..	..	..	..	..		..			..	..	0	..
1975	31	..	..	..	..	..	..		..			..	..	0	..
1976	33	..	..	..	..	..	..		..			..	..	0	..
1977	33	..	..	..	..	..	..		..			..	..	0	..
1978	32	..	..	..	..	..	..		..			..	..	0	..
1979	34	..	..	..	..	..	..		..			..	..	0	..
1980	32	195	13	..	..	..	..	..	..			..	..	0	..
1981	32	..	..	..	..	..	..	..	..			..	..	0	..
1982	31	..	..	..	..	..	..	..	..			..	..	91	..
1983	32	..	..	..	..	..	..	..	..			..	..	100	..
1984	34	..	..	..	..	..	..	..	..			..	..	185	..
1985	32	..	..									489	20	199	..
1986	35	..	..									479	20	240	..
1987	33	234	14									464	19	240	51
1988	35	231	15									443	18	224	53
1989	34	245	16									430	18	108	49
1990	34	246	16						0			479	20	92	50
1991	34	247	16				0		0			369	14	87	48
1992	34	250	14				0		1			294	11	30	46
1993	35	253	15				2		1			290	10	31	48
1994	37	256	15	0	0	0	5	0	1			251	9	37	50
1995	37	257	15	0	0	2	10	2	1		0	229	8	26	50
1996	40	258	16	0	0	5	17	4	1	0	0	214	5	24	53
1997	41	261	16	0	0	10	26	7	2	0	0	201	8	25	53
1998	41	253	16	0	0	15	38	10	5	0	0	185	7	31	53
1999	42	249	17	0	1	20	50	15	6	0	0	164	6	37	54
2000	41	253	17	0	1	26	61	20	8	0	0	131	5	40	54
2001	43	252	17	0	2	33	72	27	10	0	0	152	6	34	55
2002	41	244	17	0	2	41	86	35	12	1	0	163	7	11	54
2003*	43	241	17	0	5	27	65	20	11	0	-	102	4	10	55

¹	Impact on greenhouse effect of emission of 1 tonne of the gas compared with that of 1 tonne CO₂.
Source: Emission inventory from Statistics Norway and Norwegian Polution Control Authority.

Explanation of symbols