2016 (Cincinnati)

2015 (Baltimore)

2014 (Charlotte-Contest Canceled)

2013 (Houston)

2012 (Indianapolis)

2011 (Minneapolis)

2010 (Milwaukee)

2009 (Louisville)

2008 (Phoenix)

2007 (Reno)

2006 (Salt Lake City)

2005 (Hawaii)

2004 (Nashville)

2002 (Charlotte)

2000 (Milwaukee)