
             I    1967   Warsaw (Poland)
            II    1968   Budapest (Hungary)
           III    1969   Brno (Czecho-Slovakia)
            IV    1970   Moscow (Soviet Union)
             V    1971   Sofia (Bulgaria)
            VI    1972   Bucharest (Romania)
           VII    1974   Warsaw (Poland)
          VIII    1975   Guestrow (GDR)
            IX    1976   Budapest (Hungary)
             X    1977   Hradec Kralove (Czecho-Slovakia)
            XI    1979   Moscow (Soviet Union)
           XII    1981   Varna (Bulgaria)
          XIII    1982   Malente (FRG)
           XIV    1983   Bucharest (Romania)
            XV    1984   Sigtuna (Sweden)
           XVI    1985   Portoroz (Yugoslavia)
          XVII    1986   London-Harrow (United Kingdom)
         XVIII    1987   Jena (GDR)
           XIX    1988   Bad Ischl (Austria)
            XX    1989   Warsaw (Poland)
           XXI    1990   Groningen (The Netherlands)
          XXII    1991   Havana (Cuba)
         XXIII    1992   Helsinki (Finland)
          XXIV    1993   Williamsburg (USA)
           XXV    1994   Beijing (China)
           
          XXVI    1995   Canberra (Australia)
          
         XXVII    1996   Oslo (Norway) - confirmed
        XXVIII    1997   Sudbury (Canada) - confirmed
          XXIX    1998   (*) (Iceland) - confirmed
           XXX    1999   (*) (Italy) - confirmed
          XXXI    2000   (*) (United Kingdom) - confirmed
         XXXII    2001   (*) Turkey - confirmed
        XXXIII    2002   (*) Belgium - preliminary contacts
         XXXIV    2003   (*) Vietnam - preliminary contacts
          XXXV    2004   (*) South Korea - declaration received
         XXXVI    2005   (*) Spain - prelimimary contacts
        XXXVII    2006   (*) Greece - preliminary contacts
       XXXVIII    2007   (*) Iran - declaration received       
{the  asterisk (*) denotes that the site of the competition will be determined later}