1st Copenhagen, 1921
2nd Gothenburg, 1923
3rd Oslo, 1926
4th Helsingfors, 1929
5th Copenhagen, 1935
6th Uppsala, 1938
7th Oslo, 1947
8th Helsingfors, 1950
9th Copenhagen 1953
10th Stockholm, 1956
11th Oslo, 1959
12th Helsingfors, 1963
13th Copenhagen, 1967
14th Uppsala, 1971
15th Reykjavik, Iceland, 1975
16th Oslo, Norway, 1979
17th Helsinki, Finland, 1983
18th Århus, Denmark, 1987
19th Uppsala, Sweden, 1991
20th Reykjavik, Iceland, 1995
21st Ås, Norway, 1999
22nd Turku, Finland, 2003
23rd Copenhagen, 2007
24th Uppsala, Sweden, 2011
25th Riga, Latvia, 2015
26th Kaunas, Lithuania, 2018
27th Selfoss, Iceland, 2022