Alaska - 1995
Washington - 1990
Oregon - 1998
California - 1996
Arizona - 1995
New Mexico - 1999
Nevada - 1990
Utah - 1991
Colorado - 1991
Montana - 1995
Wyoming - 2001
North Dakota - 2008
Nebraska - 1994
Kansas - 1994
Missouri - 1998
Iowa - 2003
Minnesota - 1997
Wisconsin - 1985
Illinois - 1996
Michigan - 1998
Indiana - 1995
Ohio - 1995
Texas - 1985
Oklahoma - 1994
Louisiana - 1988
Arkansas - 1998
Mississippi - 1998
Alabama - 1992
Tennessee - 1992
Kentucky - 1992
West Virginia - 1992
Florida - 1983
Georgia - 1997
South Carolina - 1997
North Carolina - 1992
Virginia - 1990
Delaware - 1995
Pennsylvania - 1995
New York - 1982
Rhode Island - 1993
Massachusetts - 1993
Vermont - 1983
New Hampshire - 1993
Maine - 1993