NBA league average defensive rating every season 1980s

	LEAGUE	DRTG	SEASON	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF
1	NBA	105.3	1979-80	1,804	241.8	109.3	44.9	25.8	9.4	5.3	43.6	90.6	48.1	0.8	2.8	28.0	21.3	27.8	76.4	53.1	15.1	29.9	18.9	436,260	197,239	81,065	46,567	16,993	9,561	34,166	43,952
2	NBA	105.5	1980-81	1,886	241.4	108.1	43.5	25.5	9.0	5.3	43.0	88.4	48.6	0.5	2.0	24.5	21.7	28.9	75.1	53.4	14.5	28.9	18.7	455,340	203,886	82,010	48,034	16,964	10,036	35,354	47,265
3	NBA	106.9	1981-82	1,886	241.6	108.6	43.5	25.2	8.5	5.4	43.3	88.2	49.1	0.6	2.3	26.2	21.3	28.6	74.6	53.9	14.3	29.1	17.7	455,690	204,776	81,987	47,438	16,107	10,130	33,435	49,352
4	NBA	104.7	1982-83	1,886	241.3	108.5	44.5	25.9	8.9	5.6	43.5	89.7	48.5	0.5	2.3	23.8	20.9	28.3	74.0	53.1	14.8	29.6	19.1	455,090	204,658	83,853	48,862	16,778	10,566	36,038	48,373
5	NBA	107.6	1983-84	1,886	242.0	110.1	43.0	26.2	8.5	5.3	43.5	88.4	49.2	0.6	2.4	25.0	22.6	29.7	76.0	54.3	14.2	28.8	17.9	456,490	207,668	81,150	49,397	16,041	10,004	33,755	48,573
6	NBA	107.9	1984-85	1,886	241.4	110.8	43.5	26.3	8.5	5.3	43.8	89.1	49.1	0.9	3.1	28.2	22.4	29.4	76.4	54.3	14.3	29.2	17.9	455,340	209,041	82,008	49,515	16,122	10,019	33,694	47,036
7	NBA	107.2	1985-86	1,886	241.6	110.2	43.6	26.0	8.8	5.3	43.2	88.6	48.7	0.9	3.3	28.2	22.9	30.3	75.6	54.1	14.1	29.4	17.8	455,640	207,875	82,161	49,065	16,576	9,912	33,643	47,543
8	NBA	108.3	1986-87	1,886	241.6	109.9	44.0	26.0	8.6	5.5	42.6	88.8	48.0	1.4	4.7	30.1	23.2	30.5	76.3	53.8	14.7	29.3	17.0	455,590	207,338	83,020	48,998	16,264	10,411	32,039	46,277
9	NBA	108.0	1987-88	1,886	241.3	108.2	43.4	25.8	8.5	5.4	42.1	87.7	48.0	1.6	5.0	31.6	22.3	29.1	76.6	53.8	14.2	29.2	16.7	455,040	203,993	81,828	48,599	16,055	10,160	31,563	45,461
10	NBA	107.8	1988-89	2,050	241.5	109.2	43.9	25.6	9.1	5.3	42.5	89.0	47.7	2.1	6.6	32.3	22.1	28.8	76.8	53.7	14.5	29.4	17.2	495,150	223,797	90,031	52,431	18,619	10,949	35,312	48,504