re: A ranking for every conference for every decade since the 1930s (SEC tops by far)

1936-2017 AP final annual poll rankings for decades 1930s-2010s. First value is number of teams, the second is the number of points based on those rankings: 25 for 1...1 for 25.

SEC:.......52 teams, 677 points, 11.98 avg rank
Big10:.....37, 546, 10.24
Big8/12:..26, 382, 10.31
PAC12:...28, 313, 13.82
SWC:......19, 192, 14.9 (30s-80s)
ACC:.......16, 224, 11.00

SEC:.......5.78 teams ranked per decade
Big10:.....4.11
Big8/12:..2.89
PAC12:...3.11
SWC:......3.17 (30s-80s)
ACC:.......1.78