The last Conferences were held in:
- Vancouver, Canada, 2018
- Beijing, China, 2013
- Cape Town, South Africa, 2008
- Porto Alegre, Brazil, 2003
- Seoul, Korea, 1998
- Edmonton, Canada, 1993
- Helsinki, Finland, 1988
- Tokyo, Japan, 1983
- Buenos Aires, Argentina, 1978
- Melbourne, Australia, 1973
- Maryland, USA, 1968
- Rome, Italy, 1963