I might slice it a little differently, but I see what you're trying to do. The one thing I'd say is you're taking a one year snapshot (not sure what year that is, but if it's 2020, then it's pretty irrelevant) and only considering one year might not be the best approach. A three or five year average look might be a little better. Like all sports, one year a conference might be up or down, I'd try to smooth that out a little.