How many NHL teams were there in 1990?

	TEAM	SEASON	GP	W	L	T	PTS	PTS%	G	GA	DIFF	PP%	PK%	S/GP	S%	SA/GP	SV%
1	Canadiens	1989-90	80	41	28	11	93	.581	288	234	54	15.9	80.7	31.10	11.6	28.75	.898
2	Maple Leafs	1989-90	80	38	38	4	80	.500	337	358	-21	23.3	78.2	30.44	13.8	34.98	.872
3	Bruins	1989-90	80	46	25	9	101	.631	289	232	57	23.6	83.2	32.64	11.1	26.84	.892
4	Rangers	1989-90	80	36	31	13	85	.531	279	267	12	23.3	78.7	29.81	11.7	30.04	.889
5	Blackhawks	1989-90	80	41	33	6	88	.550	316	294	22	22.9	80.2	33.00	12.0	27.35	.866
6	Red Wings	1989-90	80	28	38	14	70	.438	288	323	-35	16.4	75.3	28.28	12.7	31.06	.870
7	Kings	1989-90	80	34	39	7	75	.469	338	337	1	22.2	76.0	29.65	14.2	31.04	.864
8	North Stars	1989-90	80	36	40	4	76	.475	284	291	-7	21.0	81.4	32.14	11.0	30.33	.880
9	Flyers	1989-90	80	30	39	11	71	.444	290	297	-7	19.2	81.0	30.85	11.8	31.80	.883
10	Penguins	1989-90	80	32	40	8	72	.450	318	359	-41	21.3	74.7	29.00	13.7	33.55	.866
11	Blues	1989-90	80	37	34	9	83	.519	295	279	16	22.5	80.9	29.16	12.6	29.50	.882
12	Sabres	1989-90	80	45	27	8	98	.613	286	248	38	22.1	83.5	30.20	11.8	31.55	.902
13	Canucks	1989-90	80	25	41	14	64	.400	245	306	-61	17.1	74.9	28.84	10.6	30.34	.874
14	Flames	1989-90	80	42	23	15	99	.619	348	265	83	27.7	79.2	34.35	12.7	25.34	.869
15	Islanders	1989-90	80	31	38	11	73	.456	281	288	-7	23.6	76.5	29.49	11.9	33.53	.893
16	Devils	1989-90	80	37	34	9	83	.519	295	288	7	19.0	80.3	30.80	12.0	30.71	.883
17	Capitals	1989-90	80	36	38	6	78	.488	284	275	9	17.0	80.8	30.26	11.7	29.05	.882
18	Oilers	1989-90	80	38	28	14	90	.563	315	283	32	20.6	80.3	28.15	14.0	29.06	.878
19	Whalers	1989-90	80	38	33	9	85	.531	275	268	7	20.1	81.5	28.30	12.1	26.64	.874
20	Nordiques	1989-90	80	12	61	7	31	.194	240	407	-167	18.9	74.3	28.76	10.4	34.42	.852
21	Jets	1989-90	80	37	32	11	85	.531	298	290	8	18.7	82.9	30.38	12.3	29.73	.878