How many NBA teams were there in 1972?

	TEAM	SEASON	GP	MPG	PPG	RPG	APG	FGM	FGA	FG%	FTM	FTA	FT%	TS%	MIN	PTS	REB	AST	PF
1	Celtics	1971-72	82	240.6	115.6	54.4	27.2	46.6	102.8	45.3	22.4	28.9	77.7	50.0	19,730	9,477	4,462	2,230	2,030
2	Knicks	1971-72	82	241.5	107.1	47.7	24.2	42.9	93.6	45.9	21.3	28.1	75.7	50.6	19,805	8,785	3,909	1,985	1,899
3	Warriors	1971-72	82	240.3	108.2	54.3	22.6	42.4	96.6	43.9	23.4	30.5	76.7	49.2	19,705	8,871	4,450	1,854	1,840
4	Pistons	1971-72	82	241.5	109.1	48.4	20.6	42.5	93.5	45.4	24.2	32.4	74.7	50.6	19,805	8,945	3,970	1,687	1,954
5	Lakers	1971-72	82	240.9	121.0	56.4	27.2	47.8	97.5	49.0	25.4	34.5	73.4	53.7	19,755	9,920	4,628	2,232	1,636
6	Royals	1971-72	82	241.2	107.8	45.8	24.6	42.0	91.4	45.9	23.8	31.4	75.6	51.2	19,780	8,836	3,754	2,020	2,079
7	76ers	1971-72	82	241.2	112.2	52.7	23.4	43.6	98.3	44.4	25.0	34.5	72.5	49.5	19,780	9,203	4,318	1,920	2,203
8	Hawks	1971-72	82	240.6	109.5	49.8	23.1	42.5	92.3	46.0	24.6	33.2	74.1	51.2	19,730	8,982	4,080	1,897	1,967
9	Bullets	1971-72	82	241.2	107.1	50.7	22.1	42.6	94.5	45.0	22.0	29.0	75.9	49.9	19,780	8,784	4,159	1,816	1,858
10	Bulls	1971-72	82	241.2	111.2	53.3	25.5	43.2	95.8	45.1	24.9	32.9	75.5	50.4	19,780	9,117	4,371	2,087	1,964
11	Rockets	1971-72	82	240.6	109.7	54.1	21.7	43.8	100.9	43.4	22.1	29.6	74.8	48.1	19,730	8,993	4,433	1,777	1,992
12	SuperSonics	1971-72	82	240.9	109.2	50.3	24.1	42.2	90.9	46.4	24.8	32.4	76.5	51.9	19,755	8,957	4,123	1,976	1,738
13	Bucks	1971-72	82	241.2	114.6	52.1	26.3	46.5	93.3	49.8	21.6	29.3	73.9	54.0	19,780	9,400	4,269	2,160	1,862
14	Suns	1971-72	82	242.4	116.3	52.5	24.1	43.9	96.1	45.7	28.5	36.6	77.9	51.8	19,880	9,534	4,301	1,976	2,026
15	Braves	1971-72	82	241.5	102.0	48.5	21.5	41.6	92.2	45.1	18.9	27.1	69.8	49.0	19,805	8,367	3,978	1,759	2,110
16	Cavaliers	1971-72	82	240.9	105.8	50.0	25.1	42.2	98.5	42.8	21.4	29.1	73.6	47.5	19,755	8,674	4,098	2,060	1,936
17	Trail Blazers	1971-72	82	241.5	106.8	48.7	25.5	42.2	95.6	44.2	22.4	30.4	73.6	49.0	19,805	8,759	3,996	2,090	1,873