How many NHL teams were there in 1973?

	TEAM	SEASON	GP	W	L	T	PTS	PTS%	G	GA	DIFF	S/GP	S%	SA/GP	SV%
1	Canadiens	1972-73	78	52	10	16	120	.769	329	184	145	32.01	13.2	29.92	.921
2	Maple Leafs	1972-73	78	27	41	10	64	.410	247	279	-32	33.10	9.6	33.03	.892
3	Bruins	1972-73	78	51	22	5	107	.686	330	235	95	34.32	12.3	28.96	.896
4	Rangers	1972-73	78	47	23	8	102	.654	297	208	89	34.60	11.0	27.14	.902
5	Black Hawks	1972-73	78	42	27	9	93	.596	284	225	59	29.83	12.2	30.60	.906
6	Red Wings	1972-73	78	37	29	12	86	.551	265	243	22	32.87	10.3	27.59	.887
7	Golden Seals	1972-73	78	16	46	16	48	.308	213	323	-110	26.69	10.2	35.00	.882
8	Kings	1972-73	78	31	36	11	73	.468	232	245	-13	29.09	10.2	28.78	.891
9	North Stars	1972-73	78	37	30	11	85	.545	254	230	24	31.62	10.3	31.90	.908
10	Flyers	1972-73	78	37	30	11	85	.545	296	256	40	33.63	11.3	34.40	.905
11	Penguins	1972-73	78	32	37	9	73	.468	257	265	-8	32.06	10.3	32.37	.895
12	Blues	1972-73	78	32	34	12	76	.487	233	251	-18	34.09	8.8	29.94	.893
13	Sabres	1972-73	78	37	27	14	88	.564	257	219	38	31.87	10.3	29.09	.903
14	Canucks	1972-73	78	22	47	9	53	.340	233	339	-106	29.69	10.1	32.54	.866
15	Flames	1972-73	78	25	38	15	65	.417	191	239	-48	27.12	9.0	31.82	.904
16	Islanders	1972-73	78	12	60	6	30	.192	170	347	-177	25.03	8.7	34.55	.871