How many teams where in the NBA in 1950’s?

	TEAM	GP	MPG	PPG	RPG	APG	FGM	FGA	FG%	FTM	FTA	FT%	TS%	MIN	PTS	REB	AST	PF
1	Celtics	706	242.2	97.4	62.4	23.2	35.3	91.6	38.5	26.8	36.0	74.3	45.3	170,990	68,732	39,823	16,376	18,215
2	Stags	68	241.1	78.7		20.1	29.5	86.6	34.0	19.8	28.4	69.6	39.7	16,395	5,352		1,366	1,977
3	Knicks	702	243.2	93.4	61.7	21.2	33.0	85.7	38.5	27.5	37.3	73.5	45.7	170,705	65,585	39,132	14,878	18,281
4	Warriors	702	242.0	90.9	58.7	21.5	32.8	87.9	37.3	25.3	34.3	73.8	44.1	169,880	63,803	37,236	15,061	17,744
5	Bombers	68	242.6	73.7		18.9	25.6	74.8	34.2	22.5	31.6	71.1	41.5	16,495	5,010		1,285	1,596
6	Capitols	103	240.5	78.1	43.8	15.9	27.0	81.4	33.1	24.2	32.1	75.3	40.9	24,770	8,045	1,534	1,641	2,887
7	Bullets	342	242.4	79.9	52.4	20.0	28.3	81.0	34.9	23.3	32.8	71.2	41.8	82,900	27,314	14,367	6,850	9,165
8	Pistons	703	241.7	89.6	57.9	20.3	31.7	86.2	36.8	26.2	35.7	73.3	43.9	169,945	62,981	36,794	14,289	18,438
9	Lakers	704	242.2	93.0	58.2	19.8	33.7	89.2	37.8	25.5	34.0	75.0	44.6	170,535	65,441	37,027	13,924	18,727
10	Royals	704	242.9	90.5	56.4	21.3	32.9	86.8	37.9	24.7	34.3	72.2	44.5	170,985	63,738	35,877	15,002	18,448
11	Packers	64	244.3	87.3		19.4	30.4	97.7	31.1	26.6	36.6	72.7	38.4	15,635	5,589		1,240	1,806
12	Nuggets	62	240.0	77.7		16.8	27.9	83.6	33.4	21.9	32.2	67.8	39.7	14,880	4,817		1,044	1,692
13	Olympians	269	242.6	81.1	45.8	20.0	29.5	81.0	36.4	22.1	30.8	71.8	42.9	65,260	21,817	9,393	5,368	6,596
14	Red Skins	62	240.0	82.4		20.6	27.9	81.0	34.4	26.7	37.7	70.7	42.2	14,880	5,108		1,279	1,766
15	Nationals	699	242.5	93.7	56.9	21.1	32.7	88.0	37.2	28.2	37.5	75.1	44.8	169,485	65,499	36,124	14,747	18,813
16	Hawks	702	241.9	88.6	58.4	20.8	31.4	86.2	36.4	25.9	36.4	71.1	43.3	169,800	62,206	37,289	14,614	19,423
17	Hawks	62	240.8	79.4		21.4	28.2	79.1	35.6	23.0	32.3	71.4	42.5	14,930	4,921		1,324	1,780