The Chicago Black Hawks had their best power-play percentage in a season in 1982-83, at 27.1 percent.

when did the blackhawks have their best power play percentage in a season

TEAM	PP%	SEASON	GP	W	L	T	OTL	PTS	PTS%	G	GA	PK%	S/GP	SA/GP
Chicago Black Hawks	27.1	1982-83	80	47	23	10		104	.650	338	268	76.4	31.80	31.08
Chicago Black Hawks	25.9	1985-86	80	39	33	8		86	.538	351	349	77.9	32.44	34.89
Chicago Black Hawks	25.5	1981-82	80	30	38	12		72	.450	332	363	75.4	32.08	33.23
Chicago Blackhawks	24.5	1994-95	48	24	19	5		53	.552	156	115	84.2	30.06	24.90
Chicago Black Hawks	23.6	1979-80	80	34	27	19		87	.544	241	250	80.8	30.23	31.13
Chicago Blackhawks	23.1	2010-11	82	44	29		9	97	.591	252	220	79.2	32.16	28.71
Chicago Blackhawks	23.0	1987-88	80	30	41	9		69	.431	284	328	80.2	29.34	35.67
Chicago Blackhawks	22.9	1989-90	80	41	33	6		88	.550	316	294	80.2	33.00	27.35
Chicago Blackhawks	22.6	2015-16	82	47	26		9	103	.628	234	207	80.3	30.46	30.80
Chicago Black Hawks	22.3	1980-81	80	31	33	16		78	.488	304	315	75.1	32.06	33.84
Chicago Blackhawks	22.1	1990-91	80	49	23	8		106	.663	284	211	83.8	32.05	27.68
Chicago Black Hawks	21.8	1984-85	80	38	35	7		83	.519	309	299	77.2	29.96	33.14
Chicago Blackhawks	21.7	2020-21	56	24	25		7	55	.491	159	184	76.8	29.20	33.71
Chicago Black Hawks	21.0	1977-78	80	32	29	19		83	.519	230	220	84.4	29.21	30.85
Chicago Blackhawks	21.0	1988-89	80	27	41	12		66	.413	297	335	74.6	32.86	31.41
Chicago Black Hawks	20.2	1983-84	80	30	42	8		68	.425	277	311	78.3	30.65	31.60
Chicago Blackhawks	20.2	2018-19	82	36	34		12	84	.512	267	291	72.7	32.55	34.78
Chicago Blackhawks	19.5	2013-14	82	46	21		15	107	.652	261	212	81.5	33.11	27.18
Chicago Blackhawks	19.3	2008-09	82	46	24		12	104	.634	260	209	80.6	32.72	28.59
Chicago Blackhawks	19.2	2021-22	82	28	42		12	68	.415	213	289	76.2	28.80	32.96
Chicago Blackhawks	18.4	1992-93	84	47	25	12		106	.631	279	230	83.5	32.23	27.32
Chicago Blackhawks	18.0	2016-17	82	50	23		9	109	.665	240	212	77.7	30.59	31.39
Chicago Blackhawks	17.9	2001-02	82	41	27	13	1	96	.585	216	207	81.5	27.70	25.33
Chicago Blackhawks	17.7	1995-96	82	40	28	14		94	.573	273	220	85.5	27.32	28.46
Chicago Blackhawks	17.7	2009-10	82	52	22		8	112	.683	262	203	85.3	34.12	25.10