Table A.—Gross and Net Stocks of Air and Water Pollution Abatement Plant and Equipment in Nonfarm Business, by Major Industry Group, Current-Cost and Constant-Cost Valuations, 1980-91

	Gross stocks					Net stocks
	All nonfarm industries	Manufacturing			Nonmanufacturing	All nonfarm industries	Manufacturing			Nonmanufacturing
	All nonfarm industries	Total	Durables	Nondurables	Nonmanufacturing	All nonfarm industries	Total	Durables	Nondurables	Nonmanufacturing
	Billions of current dollars
1980	103.43	58.78	24.55	34.24	44.65	71.14	37.65	15.94	21.71	33.49
1981	118.66	66.31	28.04	38.27	52.35	79.54	40.94	17.56	23.39	38.60
1982	129.00	70.16	29.72	40.43	58.84	84.46	41.76	17.80	23.95	42.70
1983	135.72	71.37	30.25	41.12	64.35	86.43	40.67	17.20	23.48	45.75
1984	142.68	72.85	31.05	41.80	69.83	88.47	39.81	16.86	22.95	48.66
1985	147.25	73.83	31.70	42.14	73.41	89.05	39.07	16.60	22.47	49.97
1986	151.04	74.05	31.96	42.08	77.00	89.49	38.24	16.26	21.99	51.24
1987	157.59	75.59	32.56	43.03	82.00	91.38	38.15	16.07	22.08	53.23
1988	165.04	77.73	33.26	44.48	87.30	93.86	38.65	15.97	22.68	55.21
1989	170.82	79.69	33.83	45.86	91.13	95.67	39.54	16.07	23.47	56.13
1990	176.91	82.83	34.28	48.55	94.07	98.19	41.75	16.25	25.49	56.44
1991	183.50	87.02	34.84	52.18	96.48	101.58	45.17	16.71	28.46	56.40
	Billions of constant (1987) dollars
1980	124.67	71.13	29.55	41.57	53.54	85.79	45.64	19.22	26.42	40.16
1981	132.26	73.56	30.91	42.66	58.70	88.84	45.54	19.38	26.15	43.31
1982	138.61	74.96	31.59	43.36	63.66	90.92	44.71	18.95	25.76	46.22
1983	142.56	74.97	31.67	43.30	67.58	90.85	42.79	18.03	24.76	48.06
1984	146.66	74.94	31.86	43.08	71.72	90.98	41.00	17.32	23.68	49.98
1985	149.58	74.81	32.07	42.74	74.77	90.52	39.62	16.81	22.81	50.91
1986	152.08	74.53	32.16	42.37	77.55	90.12	38.50	16.36	22.14	51.61
1987	154.47	74.36	32.04	42.32	80.11	89.52	37.53	15.81	21.71	52.00
1988	155.86	73.93	31.62	42.31	81.93	88.55	36.76	15.19	21.57	51.80
1989	157.52	74.05	31.42	42.63	83.48	88.16	36.75	14.93	21.82	51.40
1990	161.03	75.76	31.31	44.45	85.27	89.36	38.20	14.86	23.35	51.15
1991	164.97	78.36	31.37	47.00	86.60	91.31	40.69	15.05	25.64	50.63