in what season did mark mcgwire hit his most home runs

Mark McGwire crushed his most homers in a season in 1998, with 70 home runs.

	NAME	HR	SEASON	TM	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Mark McGwire M. McGwire	70	1998	STL	155	509	130	152	21	0	147	162	6	155	1	0	681	383	91	0	4	28	8	.299	.470	.752	1.222	176	91.7	.492	205	90.7
2	Mark McGwire M. McGwire	65	1999	STL	153	521	118	145	21	1	147	133	2	141	0	0	661	363	87	0	5	21	12	.278	.424	.697	1.120	150	64.2	.453	169	61.5
3	Mark McGwire M. McGwire	58	1997	TOT	156	540	86	148	27	0	123	101	9	159	3	0	657	349	85	0	7	16	9	.274	.393	.646	1.039	134	52.9	.429	161	51.4
4	Mark McGwire M. McGwire	52	1996	OAK	130	423	104	132	21	0	113	116	8	112	0	0	548	309	73	0	1	16	14	.312	.467	.730	1.198	142	71.8	.489	190	68.5
5	Mark McGwire M. McGwire	49	1987	OAK	151	557	97	161	28	4	118	71	5	131	1	1	641	344	81	0	8	8	6	.289	.370	.618	.987	124	45.2	.411	157	46.2
6	Mark McGwire M. McGwire	42	1992	OAK	139	467	87	125	22	0	104	90	5	105	0	1	571	273	64	0	9	12	10	.268	.385	.585	.970	106	44.3	.420	170	45.3
7	Mark McGwire M. McGwire	39	1995	OAK	104	317	75	87	13	0	90	88	11	77	1	1	422	217	52	0	6	5	9	.274	.441	.685	1.125	99	46.7	.466	183	45.9
8	Mark McGwire M. McGwire	39	1990	OAK	156	523	87	123	16	0	108	110	7	116	2	1	650	256	55	1	9	9	13	.235	.370	.489	.859	103	30.1	.379	143	32.2
9	Mark McGwire M. McGwire	33	1989	OAK	143	490	74	113	17	0	95	83	3	94	1	1	587	229	50	0	11	5	23	.231	.339	.467	.806	84	19.8	.358	131	20.5
10	Mark McGwire M. McGwire	32	2000	STL	89	236	60	72	8	0	73	76	7	78	1	0	321	176	40	0	2	12	5	.305	.483	.746	1.229	85	42.8	.494	195	41.7
11	Mark McGwire M. McGwire	32	1988	OAK	155	550	87	143	22	1	99	76	4	117	0	0	635	263	55	1	4	4	15	.260	.352	.478	.830	97	27.4	.369	137	27.3
12	Mark McGwire M. McGwire	29	2001	STL	97	299	48	56	4	0	64	56	3	118	0	0	364	147	33	0	6	3	7	.187	.316	.492	.808	49	3.6	.339	104	2.1
13	Mark McGwire M. McGwire	22	1991	OAK	154	483	62	97	22	0	75	93	3	116	2	1	585	185	44	1	5	3	13	.201	.330	.383	.714	70	3.6	.326	106	3.8
14	Mark McGwire M. McGwire	9	1994	OAK	47	135	26	34	3	0	25	37	0	40	0	0	172	64	12	0	0	3	3	.252	.413	.474	.887	30	8.1	.389	135	8
15	Mark McGwire M. McGwire	9	1993	OAK	27	84	16	28	6	0	24	21	1	19	0	1	107	61	15	0	1	5	0	.333	.467	.726	1.193	27	14.3	.492	211	14.6
16	Mark McGwire M. McGwire	3	1986	OAK	18	53	10	10	1	0	9	4	1	18	0	1	58	20	4	0	0	0	0	.189	.259	.377	.636	5	-1.6	.285	78	-1.5