The 10-year, 80% club's last 5 versions:
2004-2013: Boise St
2005-2014: Boise St, Ohio St, Oregon
2006-2015: Boise St, Ohio St, Alabama
2007-2016: Alabama, Boise St, Ohio St
2008-2017: Alabama, Boise St, Ohio St
Goes to show that with Clemson's graduation to elite levels isn't enough - they'd need probably 2-3 more years of one or two-loss seasons to get in the club. Ten years really is a long time. Hell, Alabama's dynasty doesn't even make it across the 80% threshold until 2015!!
**LSU barely misses '04-'13, but is in the club '03-'12.