who has the lowest power play percentage in a single season from 1954-55 to 1979-80

Between the 1954-55 and 1979-80 seasons, the Washington Capitals had the lowest power-play percentage by a team in a season, at 12.5 percent in 1977-78.

	TEAM	PP%	SEASON	GP	W	L	T	PTS	PTS%	G	GA	DIFF	PK%	S/GP	S%	SA/GP	SV%
1	Capitals	12.5	1977-78	80	17	49	14	48	.300	195	321	-126	71.4	24.95	9.8	31.25	.872
2	North Stars	14.9	1977-78	80	18	53	9	45	.281	218	325	-107	71.6	28.81	9.5	31.50	.871
3	Barons	15.1	1977-78	80	22	45	13	57	.356	230	325	-95	74.2	26.74	10.8	32.80	.876
4	Flyers	16.2	1979-80	80	48	12	20	116	.725	327	254	73	78.8	33.81	12.1	27.70	.885
5	Black Hawks	16.6	1978-79	80	29	36	15	73	.456	244	277	-33	76.4	28.09	10.9	34.19	.899
6	Blues	16.7	1977-78	80	20	47	13	53	.331	195	304	-109	73.3	27.84	8.8	29.75	.872
7	Blues	17.3	1978-79	80	18	50	12	48	.300	249	348	-99	74.5	26.64	11.7	31.63	.862
8	Canucks	17.3	1979-80	80	27	37	16	70	.438	256	281	-25	75.8	29.09	11.0	29.21	.880
9	Rockies	18.0	1979-80	80	19	48	13	51	.319	234	308	-74	77.3	29.39	10.0	28.63	.866
10	Blues	18.1	1979-80	80	34	34	12	80	.500	266	278	-12	84.5	27.11	12.3	30.59	.886
11	Capitals	18.2	1979-80	80	27	40	13	67	.419	261	293	-32	73.7	28.44	11.5	29.55	.876
12	Jets	18.8	1979-80	80	20	49	11	51	.319	214	314	-100	77.1	28.31	9.4	31.69	.876
13	Capitals	18.9	1978-79	80	24	41	15	63	.394	273	338	-65	69.7	28.48	12.0	31.65	.867
14	Canucks	19.0	1978-79	80	25	42	13	63	.394	217	291	-74	80.6	27.10	10.0	30.81	.882
15	Kings	19.5	1977-78	80	31	34	15	77	.481	243	245	-2	80.0	31.46	9.7	26.89	.886
16	Whalers	19.5	1979-80	80	27	34	19	73	.456	303	312	-9	74.5	27.43	13.8	29.59	.868
17	Penguins	19.8	1979-80	80	30	37	13	73	.456	251	303	-52	74.0	30.69	10.2	29.89	.873
18	Bruins	20.2	1977-78	80	51	18	11	113	.706	333	218	115	82.1	30.31	13.7	22.49	.879
19	Sabres	20.6	1978-79	80	36	28	16	88	.550	280	263	17	78.7	30.01	11.7	29.95	.890
20	Red Wings	20.8	1977-78	80	32	34	14	78	.488	252	266	-14	78.1	28.41	11.1	28.39	.883
21	Nordiques	20.8	1979-80	80	25	44	11	61	.381	248	313	-65	73.5	27.30	11.4	32.55	.880
22	Black Hawks	21.0	1977-78	80	32	29	19	83	.519	230	220	10	84.4	29.21	9.8	30.85	.911
23	Penguins	21.1	1977-78	80	25	37	18	68	.425	254	321	-67	74.7	28.83	11.0	34.86	.885
24	Maple Leafs	21.3	1977-78	80	41	29	10	92	.575	271	237	34	81.4	29.68	11.4	30.38	.902
25	Penguins	21.5	1978-79	80	36	31	13	85	.531	281	279	2	77.2	32.31	10.9	30.88	.887