| Year | Location | Dates | Attendance | Total Papers |
Poster Papers |
| 2014 | Rio de Janeiro, Brazil | ||||
| 2012 | Gaithersburg, USA | ||||
| 2010 | Seoul, South Korea | June 13-18, 2010 | |||
| 2008 | Boulder, USA | June 8 - 13 | |||
| 2006 | Torino, Italy (estimated) | July 9 - 14 | 500 | 346 | 196 |
| 2004 | London, England | June 27 - July 2 | 430 | 340 | 183 |
| 2002 | Ottawa, Canado | June 16 - June 21 | 365 | 289 | 188 |
| 2000 | Sydney, Australia | May 14 - May 19 | 435 | 329 | 209 |
| 1998 | Washington, USA | July 6 - 10 | 519 | 344 | 215 |
| 1996 | Braunschweig, Germany | June 17 - 20 | 604 | 367 | 237 |
| 1994 | Boulder, USA | June 27 - July 1 | 460 | 301 | 152 |
| 1992 | Paris, France | June 9 - 12 | 335 | 277 | 117 |
| 1990 | Ottawa, Canada | June 11 - 15 | 376 | 206 | |
| 1988 | Tsukuba, Japan | June 7 - 10 | 427 | 222 | |
| 1986 | Gaithersburg, USA | June 23 - 27 | 336 | 164 | |
| 1984 | Delft, Netherlands | August 20 - 24 | 350 | 170 | |
| 1982 | Boulder, USA | June 28 - July 1 | 108 | ||
| 1980 | Braunschweig, Germany | June 23 - 27 | 328 | 130+ | |
| 1978 | Ottawa, Canada | June 26 - 29 | |||
| 1976 | Boulder, USA | June 28 - July 1 | |||
| 1974 | London, England | July 1 - 5 | 385 | 120 | |
| 1972 | Boulder, USA | June 26 - 29 | 136 | ||
| 1970 | Boulder, USA | June 2 - 5 | |||
| 1968 | Boulder, USA | ||||
| 1966 | Boulder, USA | ||||
| 1964 | Boulder, USA | June 23 - 25 | |||
| 1962 | Boulder, USA | ||||
| 1960 | Boulder, USA | June 22 - 24 | |||
| 1958 | Boulder, USA | August 13 - 15 | 870 |