All Texas Symposia
2013 - Dallas 27th - 50 years
2012 - São Paulo 26th
2010 - Heidelberg 25th
2008 - Vancouver 24th
2006 - Melbourne 23rd
2004 - Stanford 22nd
2002 - Florence 21st
2000 - Austin 20th
1998 - Paris 19th
1996 - Chicago 18th
1994 - Munich 17th
1992 - Berkeley 16th
1990 - Brighton 15th
1988 - Dallas 14th - 25 years
1986 - Chicago 13th
1984 - Jerusalem 12th
1982 - Austin 11th
1980 - Baltimore 10th
1978 - Munich 9th
1976 - Boston 8th
1974 - Dallas 7th
1972 - New York 6th
1970 - Austin 5th
1968 - Dallas 4th
1967 - New York 3rd
1964 - Austin 2nd
1963 - Dallas 1st