Table 2.2.—Value of the Resource, Additions, and Depletion of Gas, Current Rent Method II (Value of Capital)

[Billions of current dollars]

Year	Opening stock	Additions	Depletion	Revaluation adjustment	Closing stock (1+2-3+4)
	(1)	(2)	(3)	(4)	(5)
1947		0.3	0.1		6.1
1948	6.1	.5	.2	.7	7.2
1949	7.2	.4	.2	.1	7.5
1950	7.5	.5	.2	-.1	7.7
1951	7.7	.6	.3	.1	8.1
1952	8.1	.5	.3	.3	8.6
1953	8.6	.9	.4	1.5	10.6
1954	10.6	.5	.5	2.2	12.8
1955	12.8	1.4	.6	2.0	15.7
1956	15.7	1.7	.7	.5	17.1
1957	17.1	1.4	.7	.5	18.2
1958	18.2	1.4	.8	1.8	20.7
1959	20.7	1.6	.9	.1	21.4
1960	21.4	1.2	1.1	2.4	23.9
1961	23.9	1.6	1.2	1.8	26.0
1962	26.0	1.9	1.3	1.5	28.1
1963	28.1	1.9	1.5	1.1	29.7
1964	29.7	2.1	1.6	-.1	30.1
1965	30.1	2.2	1.6	-.5	30.1
1966	30.1	2.0	1.7	-.8	29.6
1967	29.6	2.2	1.8	.7	30.7
1968	30.7	1.3	1.9	-.2	29.9
1969	29.9	.8	2.0	-.4	28.2
1970	28.2	3.8	2.2	1.1	30.9
1971	30.9	1.0	2.3	-.3	29.4
1972	29.4	.9	2.2	-.3	27.8
1973	27.8	.6	2.2	3.0	29.2
1974	29.2	.9	2.4	7.5	35.2
1975	35.2	1.7	3.2	15.1	48.9
1976	48.9	1.8	4.8	22.0	67.8
1977	67.8	4.3	6.9	19.9	85.1
1978	85.1	4.6	8.3	18.5	99.9
1979	99.9	7.7	10.6	29.1	126.1
1980	126.1	13.7	11.3	17.2	145.6
1981	145.6	12.1	10.6	-8.4	138.8
1982	138.8	16.7	16.9	78.8	217.3
1983	217.3	22.3	24.2	111.5	326.9
1984	326.9	25.7	30.5	22.0	344.1
1985	344.1	20.6	27.4	-42.0	295.3
1986	295.3	21.5	24.1	-33.3	259.3
1987	259.3	14.9	20.3	-51.8	202.2
1988	202.2	-1.8	14.7	-51.4	134.2
1989	134.2	12.4	13.1	-4.1	129.5
1990	129.5	16.1	14.3	5.7	136.9
1991	136.9	12.2	14.0	-2.3	132.8