2013 - present: Dr Markku Jokinen ( Finland) 2007 - 2013: Berglind Stefánsdóttir ( Iceland) 2005 - 2007: Helga Stevens ( Belgium) 1990 - 2005: Knud Søndergaard ( Denmark) 1989 - 1989: Jeff Labes ( France) 1958 - 1989: John Young ( United Kingdom)