Paul Pfeiffer helped me with the 1984 Worlds result.

1978   492 laps by Joel Montague in Gothenburg, Sweden.
1980   531 laps by Paul Pfeiffer in Sylmar, USA.
1982   626 laps by Paul Pfeiffer in Uden, Holland.
1984   445 laps by Paul Pfeiffer in Elmsford, USA. (Not a King Track)
1986   661 laps by Lasse Åberg in Valkenburg, Holland.
1987   747 laps by P.A Watson in Tolouse, France.
1988   770 laps by Mike Swiss in Chicago, USA.
1989   789 laps by Stuart Koford in Chicago, USA.
1989         laps by P.A Watson in San Antonio, USA.
1990   812 laps by Mike Swiss in Orlando, USA. 
1991   823 laps by P.A Watson in Chicago, USA.
1992         laps by Jae Young in St. Martin, NL Antilles.
1993   803 laps by Jon Laster in Jackson, USA.
1994   886 laps by Martin Gramann in Mönsterås, Sweden.
1995   816 laps by Alexandrie Riberio in Sao Paulo, Brazil.
1996   945 laps by Paul Ciccarello in Chicago, USA.
1997   924 laps by Vlado Okali in Plzen, Czeck Republic.
1998   941 laps by Paul Ciccarello in Fon du Lac, USA.
1999   893 laps by Mario Schöne in Mönsterås, Sweden.
2000   997 laps by Lasse Åberg in Sao Paulo, Brazil.
2001  1076 laps by Paul 'Beuf' Pedersen in Port Jefferson, USA.
2002  1006 laps by Juha Ylisipola in Plzen, Czeck Republic.
2003  1110 laps by Mario Schöne in Sao Paulo, Brazil.
2004  1089 laps by Paul 'Beuf' Pedersen in Port Jefferson, USA.
2005  1097 laps by Josef Korec in Kouvola, Finnland.
2006  1153 laps by Joán Carlos Geraldo in Rio, Brazil.
2007  1193 laps by Paul 'Beuf' Pedersen in Buena Park, USA.
2008  1097 laps by Vladimir Horky in Bruhl, Germany.
2009  1225 laps by Petr Krcil in Sao Paulo, Brazil.
2010  1282 laps by Filipe Tavares in Port Jefferson, USA.