power play percentage by every team each year

The Montreal Canadiens averaged a power-play percentage of 31.9 in 1977-78.

	TEAM	PP%	SEASON	GP	W	L	T	PTS	PTS%	G	GA	DIFF	PK%	S/GP	S%	SA/GP	SV%
1	Canadiens	31.9	1977-78	80	59	10	11	129	.806	359	183	176	81.0	32.76	13.7	25.94	.912
2	Maple Leafs	21.3	1977-78	80	41	29	10	92	.575	271	237	34	81.4	29.68	11.4	30.38	.902
3	Bruins	20.2	1977-78	80	51	18	11	113	.706	333	218	115	82.1	30.31	13.7	22.49	.879
4	Rangers	28.8	1977-78	80	30	37	13	73	.456	279	280	-1	80.2	28.14	12.4	31.38	.888
5	Black Hawks	21.0	1977-78	80	32	29	19	83	.519	230	220	10	84.4	29.21	9.8	30.85	.911
6	Red Wings	20.8	1977-78	80	32	34	14	78	.488	252	266	-14	78.1	28.41	11.1	28.39	.883
7	Barons	15.1	1977-78	80	22	45	13	57	.356	230	325	-95	74.2	26.74	10.8	32.80	.876
8	Kings	19.5	1977-78	80	31	34	15	77	.481	243	245	-2	80.0	31.46	9.7	26.89	.886
9	North Stars	14.9	1977-78	80	18	53	9	45	.281	218	325	-107	71.6	28.81	9.5	31.50	.871
10	Flyers	23.6	1977-78	80	45	20	15	105	.656	296	200	96	80.6	32.94	11.2	25.50	.902
11	Penguins	21.1	1977-78	80	25	37	18	68	.425	254	321	-67	74.7	28.83	11.0	34.86	.885
12	Blues	16.7	1977-78	80	20	47	13	53	.331	195	304	-109	73.3	27.84	8.8	29.75	.872
13	Sabres	22.2	1977-78	80	44	19	17	105	.656	288	215	73	85.8	30.99	11.6	27.86	.904
14	Canucks	22.5	1977-78	80	20	43	17	57	.356	239	320	-81	71.5	25.65	11.6	30.78	.870
15	Flames	22.5	1977-78	80	34	27	19	87	.544	274	252	22	80.2	29.23	11.7	26.66	.882
16	Islanders	31.4	1977-78	80	48	17	15	111	.694	334	210	124	83.5	31.13	13.4	28.20	.907
17	Rockies	22.6	1977-78	80	19	40	21	59	.369	257	305	-48	77.6	30.04	10.7	31.64	.879
18	Capitals	12.5	1977-78	80	17	49	14	48	.300	195	321	-126	71.4	24.95	9.8	31.25	.872
19	Canadiens	28.3	1978-79	80	52	17	11	115	.719	337	204	133	83.6	32.16	13.1	25.41	.900
20	Maple Leafs	25.4	1978-79	80	34	33	13	81	.506	267	252	15	78.8	30.54	10.9	31.48	.900
21	Bruins	23.6	1978-79	80	43	23	14	100	.625	316	270	46	74.6	28.06	14.1	24.78	.864
22	Rangers	23.9	1978-79	80	40	29	11	91	.569	316	292	24	74.7	30.89	12.8	27.75	.868
23	Black Hawks	16.6	1978-79	80	29	36	15	73	.456	244	277	-33	76.4	28.09	10.9	34.19	.899
24	Red Wings	23.9	1978-79	80	23	41	16	62	.388	252	295	-43	77.4	28.39	11.1	28.33	.870
25	Kings	24.4	1978-79	80	34	34	12	80	.500	292	286	6	77.6	30.25	12.1	29.44	.879