| XXIII | 2003 | Zeuthen, Germany | |
| XXII | 2002 | Stanford, California, USA | |
| XXI | 2001 | Seoul, Korea | |
| XX | 2000 | Lisbon, Portugal | |
| XIX | 1999 | Ann Arbor, Michigan, USA | |
| XVIII | 1998 | Frascati, Italy | |
| XVII | 1997 | Bristol, UK | |
| XVI | 1996 | Mexico City, Mexico | |
| XV | 1995 | Krakow, Poland | |
| XIV | 1994 | Tallahassee, Florida, USA | |
| XIII | 1993 | Heidelberg, Germany | |
| XII | 1992 | Boulder, Colorado, USA | |
| XI | 1991 | Colmar, France | |
| X | 1990 | Durham, North Carolina, USA | |
| IX | 1989 | Jerusalem, Israel | |
| VIII | 1988 | Capri, Italy | |
| VII | 1987 | Tsukuba, Japan | |
| VI | 1986 | Chicago, Illinois, USA | |
| V | 1985 | Autun, France | |
| IV | 1984 | Santa Cruz, California, USA | |
| III | 1983 | Como, Italy | |
| II | 1982 | Stockholm, Sweden | |
| I | 1981 | Blackburg, Virginia, USA |
Webmaster, update