How many NHL teams were there in 1980?

	TEAM	SEASON	GP	W	L	T	PTS	PTS%	G	GA	DIFF	PP%	PK%	S/GP	S%	SA/GP	SV%
1	Canadiens	1979-80	80	47	20	13	107	.669	328	240	88	29.1	81.4	31.64	13.0	27.69	.892
2	Maple Leafs	1979-80	80	35	40	5	75	.469	304	327	-23	24.7	79.1	32.42	11.7	33.28	.877
3	Bruins	1979-80	80	46	21	13	105	.656	310	234	76	24.6	82.9	27.94	13.9	24.13	.879
4	Rangers	1979-80	80	38	32	10	86	.538	308	284	24	25.7	82.2	29.79	12.9	28.69	.876
5	Black Hawks	1979-80	80	34	27	19	87	.544	241	250	-9	23.6	80.8	30.23	10.0	31.13	.900
6	Red Wings	1979-80	80	26	43	11	63	.394	268	306	-38	22.4	76.3	29.86	11.2	28.46	.866
7	Kings	1979-80	80	30	36	14	74	.463	290	313	-23	26.8	68.2	28.96	12.5	30.70	.873
8	North Stars	1979-80	80	36	28	16	88	.550	311	253	58	23.8	81.9	31.39	12.4	28.63	.890
9	Flyers	1979-80	80	48	12	20	116	.725	327	254	73	16.2	78.8	33.81	12.1	27.70	.885
10	Penguins	1979-80	80	30	37	13	73	.456	251	303	-52	19.8	74.0	30.69	10.2	29.89	.873
11	Blues	1979-80	80	34	34	12	80	.500	266	278	-12	18.1	84.5	27.11	12.3	30.59	.886
12	Sabres	1979-80	80	47	17	16	110	.688	318	201	117	24.4	82.9	29.33	13.6	23.99	.895
13	Canucks	1979-80	80	27	37	16	70	.438	256	281	-25	17.3	75.8	29.09	11.0	29.21	.880
14	Flames	1979-80	80	35	32	13	83	.519	282	269	13	23.6	81.0	28.15	12.5	30.55	.890
15	Islanders	1979-80	80	39	28	13	91	.569	281	247	34	23.4	77.6	27.71	12.7	29.95	.897
16	Rockies	1979-80	80	19	48	13	51	.319	234	308	-74	18.0	77.3	29.39	10.0	28.63	.866
17	Capitals	1979-80	80	27	40	13	67	.419	261	293	-32	18.2	73.7	28.44	11.5	29.55	.876
18	Oilers	1979-80	80	28	39	13	69	.431	301	322	-21	22.3	76.4	28.36	13.3	30.78	.869
19	Whalers	1979-80	80	27	34	19	73	.456	303	312	-9	19.5	74.5	27.43	13.8	29.59	.868
20	Nordiques	1979-80	80	25	44	11	61	.381	248	313	-65	20.8	73.5	27.30	11.4	32.55	.880
21	Jets	1979-80	80	20	49	11	51	.319	214	314	-100	18.8	77.1	28.31	9.4	31.69	.876