For the record, here are the World Championship attendance figures from the USMS Rule Book (Appendix F):
Year Date Location Swimmers
1986 7/12–16 Tokyo, Japan 3,400
1988 10/9–16 Brisbane, Australia 3,594
1990 8/6–13 Rio de Janeiro, Brazil 1,685
1992 6/25–7/5 Indianapolis, Ind., USA 2,406
1994 6/4–10 Montreal, Canada 3,474
1996 6/23–7/2 Sheffield, England 3,837
1998 6/19–27 Casablanca, Morocco 1,954
2000 7/27–8/9 Munich, Germany 6,184
2002 3/21–4/3 Christchurch, New Zealand 2,386
2004 6/3–31 Riccione, Italy 6,306
2006 8/3–17 Stanford, Calif., USA 5,535
2008 5/15–25 Perth, Australia 5,104
2010 7/27–8/7 Goteburg and Boras, Sweden 5,233
2012 6/8–6/17 Riccione, Italy
By "swimmers" my assumption is participants in swimming, not the total number of competitors (i.e., including diving, water polo, etc.), but I could be wrong.
For the record, here are the World Championship attendance figures from the USMS Rule Book (Appendix F):
Year Date Location Swimmers
1986 7/12–16 Tokyo, Japan 3,400
1988 10/9–16 Brisbane, Australia 3,594
1990 8/6–13 Rio de Janeiro, Brazil 1,685
1992 6/25–7/5 Indianapolis, Ind., USA 2,406
1994 6/4–10 Montreal, Canada 3,474
1996 6/23–7/2 Sheffield, England 3,837
1998 6/19–27 Casablanca, Morocco 1,954
2000 7/27–8/9 Munich, Germany 6,184
2002 3/21–4/3 Christchurch, New Zealand 2,386
2004 6/3–31 Riccione, Italy 6,306
2006 8/3–17 Stanford, Calif., USA 5,535
2008 5/15–25 Perth, Australia 5,104
2010 7/27–8/7 Goteburg and Boras, Sweden 5,233
2012 6/8–6/17 Riccione, Italy
By "swimmers" my assumption is participants in swimming, not the total number of competitors (i.e., including diving, water polo, etc.), but I could be wrong.