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

The St. Louis Blues had their highest power-play percentage in a season in 2021-22, at 27.0 percent.

	TEAM	PP%	SEASON	GP	W	L	T	OTL	PTS	PTS%	SOW	SOL	G	GA	DIFF	PK%	S/GP	S%	SA/GP	SV%
1	Blues	27.0	2021-22	82	49	22		11	109	.665	2	3	309	239	70	84.1	30.39	12.4	31.60	.908
2	Blues	24.6	1986-87	80	32	33	15		79	.494			281	293	-12	81.4	29.34	12.0	29.55	.876
3	Blues	24.3	2019-20	71	42	19		10	94	.662	2	3	223	190	33	79.3	30.69	10.2	29.58	.910
4	Blues	24.2	1980-81	80	45	18	17		107	.669			352	281	71	82.0	30.39	14.5	31.75	.889
5	Blues	23.2	2020-21	56	27	20		9	63	.563	2	3	167	167	0	77.8	28.96	10.3	29.82	.900
6	Blues	22.5	1981-82	80	32	40	8		72	.450			315	349	-34	76.2	30.79	12.8	32.23	.865
7	Blues	22.5	1989-90	80	37	34	9		83	.519			295	279	16	80.9	29.16	12.6	29.50	.882
8	Blues	22.4	1983-84	80	32	41	7		71	.444			293	316	-23	74.8	30.33	12.1	30.00	.868
9	Blues	22.3	2014-15	82	51	24		7	109	.665	9	4	239	197	42	83.7	30.91	9.4	27.23	.912
10	Blues	21.9	1984-85	80	37	31	12		86	.538			299	288	11	76.1	31.08	12.0	29.81	.879
11	Blues	21.9	1992-93	84	37	36	11		85	.506			282	278	4	83.7	29.04	11.6	33.81	.902
12	Blues	21.5	1985-86	80	37	34	9		83	.519			302	291	11	77.2	31.44	12.0	32.25	.887
13	Blues	21.5	2015-16	82	49	24		9	107	.652	5	4	219	197	22	85.1	30.17	8.9	29.74	.919
14	Blues	21.3	1982-83	80	25	40	15		65	.406			285	316	-31	81.3	31.29	11.4	31.18	.873
15	Blues	21.3	2016-17	82	46	29		7	99	.604	2	2	233	216	17	84.8	28.41	10.0	28.38	.907
16	Blues	21.1	2018-19	82	45	28		9	99	.604	3	3	244	220	24	81.5	31.76	9.4	28.60	.906
17	Blues	20.5	2008-09	82	41	31		10	92	.561	6	6	227	227	0	83.8	27.70	10.0	28.55	.903
18	Blues	20.5	1993-94	84	40	33	11		91	.542			270	283	-13	81.2	30.60	10.5	35.07	.904
19	Blues	20.5	2002-03	82	41	24	11	6	99	.604			253	222	31	81.7	28.06	11.0	24.96	.892
20	Blues	20.3	1998-99	82	37	32	13		87	.530			237	209	28	87.9	30.11	9.6	22.78	.888
21	Blues	20.1	1990-91	80	47	22	11		105	.656			310	250	60	83.8	31.88	12.2	29.31	.893
22	Blues	20.0	1988-89	80	33	35	12		78	.488			275	285	-10	76.7	29.09	11.8	28.09	.873
23	Blues	19.9	1987-88	80	34	38	8		76	.475			278	294	-16	79.4	28.56	12.2	30.31	.879
24	Blues	19.8	2013-14	82	52	23		7	111	.677	9	3	239	188	51	85.7	29.29	10.0	26.38	.913
25	Blues	19.5	2012-13	48	29	17		2	60	.625	5	1	124	114	10	84.7	27.83	9.3	24.19	.902