how many times has there been 5 players with at least 50 goals in a season

Maurice Richard played 1 season with 50+ goals.

	NAME	SEAS	G	GP	A	P	+/-	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%
1	Maurice Richard M. Richard	1	50	50	23	73		46	11	1	0	0	7
2	Bernie Geoffrion B. Geoffrion	1	50	64	45	95	+3	27	16	22	0	0	12		316	15.8
3	Bobby Hull B. Hull	5	264	353	197	461	+122	225	77	65	8	5	37		1,796	14.7
4	Johnny Bucyk J. Bucyk	1	51	78	65	116	+37	8	22	26	0	0	5		225	22.7
5	Phil Esposito P. Esposito	5	326	389	361	687	+208	354	111	130	16	7	60		2,126	15.3
6	Vic Hadfield V. Hadfield	1	50	78	56	106	+60	142	23	11	0	0	7		242	20.7
7	Rick MacLeish R. MacLeish	1	50	78	50	100	+16	69	21	18	2	1	6		279	17.9
8	Mickey Redmond M. Redmond	2	103	152	67	170	-14	38	36	28	0	0	16		659	15.6
9	Ken Hodge K. Hodge	1	50	76	55	105	+40	43	15	20	0	0	11		251	19.9
10	Richard Martin R. Martin	2	104	146	77	181	-17	110	29	31	0	0	12		617	16.9
11	Danny Grant D. Grant	1	50	80	37	87	-12	28	19	11	1	5	6		238	21.0
12	Guy Lafleur G. Lafleur	6	327	462	439	766	+377	159	90	143	2	2	63		1,823	17.9
13	Bill Barber B. Barber	1	50	80	62	112	+74	104	15	23	4	3	10		380	13.2
14	Danny Gare D. Gare	2	106	155	56	162	+80	219	25	15	1	0	20		573	18.5
15	Pierre Larouche P. Larouche	2	103	149	99	202	+38	49	30	28	0	0	10		539	19.1
16	Reggie Leach R. Leach	2	111	156	56	167	+113	69	15	17	4	1	18		663	16.7
17	Jean Pronovost J. Pronovost	1	52	80	52	104	+16	24	13	24	2	0	3		299	17.4
18	Marcel Dionne M. Dionne	6	329	478	419	748	+121	216	107	159	7	3	39		2,120	15.5
19	Steve Shutt S. Shutt	1	60	80	45	105	+89	28	8	10	0	0	9		293	20.5
20	Mike Bossy M. Bossy	9	535	689	516	1,051	+388	177	172	175	7	1	75	2	2,483	21.5
21	Guy Chouinard G. Chouinard	1	50	80	57	107	+23	14	11	15	0	0	5		229	21.8
22	Wayne Gretzky W. Gretzky	9	597	710	1,091	1,688	+529	325	127	316	55	59	63	1	2,884	20.7
23	Charlie Simmer C. Simmer	2	112	129	94	206	+79	127	44	34	0	0	18		384	29.2
24	Blaine Stoughton B. Stoughton	2	108	160	83	191	-7	73	29	24	3	1	13		500	21.6
25	Wayne Babych W. Babych	1	54	78	42	96	+14	93	14	12	0	0	7		306	17.6