# Name Years Size Links
Colorado 1975–2015 72.8%
EN 1994–2003 11.0%
PQ 2004–2008 15.3%
UNCE 2004–2008 14.7%
PLRA 1990–2015 40.4%
LP 1975–1989 13.3%
LR 1975–1989 21.7%
UNACE 2009–2015 18.8%
APC 2009–2013 2.5%