How many NBA teams were there in 1990?

	TEAM	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	Celtics	1989-90	82	240.3	110.0	46.0	29.5	6.6	5.5	43.5	87.2	49.8	1.3	4.9	26.2	21.8	26.3	83.2	55.7	13.0	33.0	15.3	19,705	9,023	3,773	2,423	539	455	1,256	1,717
2	Knicks	1989-90	82	241.8	108.3	44.1	26.1	8.7	6.0	41.9	86.5	48.4	2.9	8.7	33.2	21.6	28.6	75.6	54.7	14.5	29.6	17.2	19,830	8,879	3,613	2,140	714	492	1,412	1,828
3	Warriors	1989-90	82	240.3	116.3	40.2	24.1	9.2	6.0	42.5	87.9	48.4	3.0	9.1	32.4	28.2	34.9	80.9	56.3	11.2	29.1	17.3	19,705	9,534	3,300	1,978	756	488	1,415	2,010
4	Pistons	1989-90	82	241.5	104.3	44.4	24.3	6.2	5.1	40.6	85.1	47.8	2.2	6.6	32.7	20.9	27.5	76.1	53.7	14.5	30.0	15.0	19,805	8,556	3,643	1,996	512	418	1,233	1,961
5	Lakers	1989-90	82	242.1	110.7	43.4	27.2	8.0	5.4	41.9	85.5	49.0	3.8	10.3	36.7	23.2	29.5	78.7	56.2	13.4	30.0	15.0	19,855	9,079	3,557	2,232	655	445	1,226	1,737
6	Kings	1989-90	82	240.9	101.7	40.4	25.0	6.7	4.8	40.3	86.0	46.8	2.6	7.9	33.3	18.5	24.0	77.1	52.7	11.6	28.8	15.1	19,755	8,341	3,315	2,052	546	392	1,239	1,863
7	76ers	1989-90	82	241.5	110.2	42.9	23.6	8.4	4.5	41.9	85.7	48.9	2.3	6.6	34.8	24.1	30.6	78.8	55.6	13.5	29.3	14.7	19,805	9,039	3,517	1,932	687	365	1,209	1,697
8	Hawks	1989-90	82	240.6	108.5	42.2	22.2	8.7	4.3	41.7	85.6	48.7	1.5	5.0	30.2	23.7	31.0	76.4	54.7	15.5	26.7	15.5	19,730	8,901	3,460	1,820	717	353	1,270	1,871
9	Bullets	1989-90	82	241.8	107.7	44.5	27.0	6.8	5.2	43.9	92.5	47.5	0.5	2.4	18.8	19.5	25.5	76.4	51.9	14.6	29.9	14.6	19,830	8,832	3,648	2,214	561	424	1,201	1,929
10	Bulls	1989-90	82	241.8	109.5	40.9	26.5	9.9	4.7	43.1	86.5	49.8	3.0	8.2	37.4	20.3	26.1	77.8	55.9	13.1	27.8	15.2	19,830	8,977	3,354	2,172	814	388	1,247	1,906
11	Spurs	1989-90	82	240.6	106.3	44.4	24.8	9.7	6.8	41.3	85.3	48.4	0.7	2.8	23.9	23.0	30.9	74.5	53.7	14.2	30.2	17.1	19,730	8,718	3,637	2,037	799	554	1,399	1,854
12	Nuggets	1989-90	82	241.5	114.6	45.1	27.7	9.9	4.0	45.3	97.7	46.4	2.8	8.3	33.7	21.2	26.8	78.9	52.3	14.3	30.9	13.9	19,805	9,397	3,701	2,275	814	329	1,136	2,047
13	Pacers	1989-90	82	242.4	109.3	40.6	24.7	6.7	4.3	41.2	83.0	49.7	3.6	9.4	38.2	23.2	28.5	81.6	57.2	11.5	29.1	16.4	19,880	8,962	3,328	2,023	552	350	1,342	1,972
14	Nets	1989-90	82	240.3	100.1	45.0	18.0	9.4	5.9	38.5	90.4	42.6	1.7	6.2	27.7	21.4	28.7	74.6	48.6	16.6	28.3	16.6	19,705	8,208	3,687	1,475	774	481	1,360	1,952
15	Rockets	1989-90	82	241.5	106.7	47.0	26.8	9.9	6.7	42.5	88.4	48.0	1.9	6.0	31.2	19.9	27.6	72.0	53.1	14.8	32.2	18.5	19,805	8,752	3,855	2,194	809	551	1,513	1,934
16	SuperSonics	1989-90	82	242.7	106.9	43.6	22.9	8.5	4.1	42.3	88.3	47.9	2.8	7.9	35.5	19.6	26.4	74.1	53.5	16.1	27.5	16.3	19,905	8,769	3,578	1,874	701	335	1,336	2,064
17	Bucks	1989-90	82	241.8	106.0	40.9	25.0	10.1	4.0	41.2	87.1	47.3	2.5	8.2	31.2	21.0	27.7	75.8	53.3	13.5	27.4	16.0	19,830	8,691	3,354	2,046	826	326	1,315	2,086
18	Suns	1989-90	82	242.1	114.9	45.2	25.7	8.1	6.1	43.2	87.1	49.6	2.1	6.6	32.4	26.3	33.1	79.5	56.5	12.8	32.3	15.5	19,855	9,423	3,704	2,109	668	501	1,275	1,825
19	Clippers	1989-90	82	241.5	103.8	41.7	24.1	9.5	6.2	40.5	83.6	48.4	0.7	2.8	24.3	22.1	30.0	73.8	53.6	12.9	28.8	18.9	19,805	8,509	3,418	1,978	782	507	1,547	1,859
20	Cavaliers	1989-90	82	242.4	102.6	42.8	25.7	7.9	6.2	39.2	85.1	46.1	4.2	10.4	40.7	20.0	26.8	74.4	52.9	13.8	29.0	15.2	19,880	8,411	3,508	2,106	645	512	1,243	1,666
21	Trail Blazers	1989-90	82	242.4	114.2	47.6	25.4	9.1	4.4	43.6	92.0	47.3	2.3	6.9	33.6	24.8	33.3	74.3	53.5	16.5	31.1	16.5	19,880	9,365	3,907	2,085	749	364	1,356	2,048
22	Jazz	1989-90	82	241.8	106.8	42.1	27.0	8.3	6.0	40.6	80.4	50.5	2.8	7.7	35.9	22.9	30.3	75.4	57.0	11.6	30.5	17.2	19,830	8,760	3,454	2,212	677	491	1,410	2,031
23	Mavericks	1989-90	82	242.1	102.2	42.2	21.7	8.1	4.9	39.6	83.3	47.5	1.9	5.9	32.3	21.2	27.6	76.7	53.6	12.7	29.5	15.0	19,855	8,384	3,461	1,776	664	398	1,228	1,733
24	Heat	1989-90	82	240.6	100.6	43.4	23.9	9.0	4.7	41.3	89.6	46.1	1.1	3.7	29.3	17.0	24.7	68.7	50.1	15.1	28.2	19.0	19,730	8,247	3,555	1,957	736	388	1,557	2,123
25	Timberwolves	1989-90	82	242.1	95.2	39.6	22.5	9.6	4.2	37.4	83.9	44.6	0.9	3.6	24.8	19.5	26.1	74.7	49.9	14.6	25.0	14.6	19,855	7,803	3,249	1,844	789	344	1,197	1,901