World Congress sites since 1991:
1991: Singapore, Singapore
1994: Montreal, Canada
1997: Copenhagen, Denmark
2000: Washington DC, U.S.A.
2003: Santiago, Chile
2006: Kuala Lumpur, Malaysia
2009: Cape Town, South Africa
2012: Rome, Italy
2015: Vancouve, Canada
2018: Rio de Janeiro, Brazil
World Congress sites since 1991: