2009
Spring Phoenix (April 16-19)
Fall Washington, D.C. (Nov. 12-15)

2008
Spring Anaheim (April 17-20)
Fall St. Louis (Nov. 13-16)

2007
Spring Denver 3,367 (3,092 paid) (April 12-15)
Fall Philadelphia (Nov. 8-11)

2006
Spring San Francisco 4,256 (3,767 paid) (April 20-23)
Fall Nashville 5,020 (4,711 paid) (Nov. 9-12)

2005
Spring Seattle 4,320 (3,920 paid)
Fall Chicago 6,191 (5,640 paid) (Nov. 10-13)

2004
Spring San Diego 4,355 (3,958 paid)
Fall Atlanta 3,869 (3,648 paid)

2003
Spring Portland 3,596 (3,154 paid)
Fall Washington, D.C. 4,803 (4,354 paid)

2002
Spring Phoenix 3,612 (3,164 paid)
Fall Dallas 5,278 (4,354 paid)

2001
Spring San Francisco 5,367 (4,970 paid)
Fall Boston 3,155 (2,732)

2000
Spring Anaheim 4,770 (4,535 paid)
Fall Kansas City 4,319 (4,015 paid)

1999
Spring Albuquerque 2,613 (2,392 paid)
Fall Atlanta 4,102 (3,880 paid)

1998
Spring Seattle 4 ,517 (4,199 paid)
Fall Washington, D.C. 5,121 (4,820 paid)

1997
Spring Pheonix 3,547 (3,314 paid)
Fall St. Louis 4,129 (3,888 paid)

1996
Spring San Francisco 3,925
Fall Chicago 4,380

1995
Spring San Diego 2,949
Fall Kansas City 3,461

1994
Spring Portland 2,355
Fall Dallas 3,033

1993
Spring Long Beach 2,675
Fall Washington, D.C. 3,349

1992
Spring Denver 1,800
Fall Colombus 2,100

1991
Spring Albuquerque 2,200
Fall Chicago 3,138

1990
Spring Seattle 1,830
Fall Indianapolis 1,610