Here is some information: http://www.italianculinary.it/wpc.htm
Here are the results from 1996:
If you can not open the link, here is the list:
Results of the Culinary OlympicsBerlin 1996
Olympic Winner of Nations 19961. Switzerland2. Norway3. Hong KongCategory A(Cold Platters Hors d'oeuvres)1. Australia2. Switzerland3. CanadaCategory BRestaurant platter and Hot Menus1. Switzerland2. Australia3. CanadaCategory C Pastry1. Hong Kong2. Switzerland3. NorwayCategory R(Hot competition)1. Switzerland2. Norway3. HongkongNational Youth Teams 96 1. Sweden2. Denmark3. AustraliaMilitary Teams / Troops Catering 1. Great Britain2. USA3. GermanyThe IKA-Cup 1996 / Regional Teams 1. Switzerland2. Canada3. SwitzerlandThe Josef-Dobler-Cup 1996 / Youth Regional Teams Team Quebec
I hope this answers your question. If not, then please reply. Thank you.
I asked from 1996 ONWARDs?