2022
Germany
20th ISPNO
Hamburg, Germany (Rutkowski, Pfister)
2020
Japan
19th ISPNO
Karuizawa, Japan (Ichimura, Nishikawa)
2018
USA
18th ISPNO
Denver, CO, USA (Foreman, Handler)
2016
United Kingdom
17th ISPNO
Liverpool, England (Pizer)
2014
Singapore
16th ISPNO
Singapore (Kellie)
2012
Canada
15th ISPNO
Toronto, Canada (Bouffet)
2010
Austria
14th ISPNO
Vienna, Austria (Czech, Slavc)
2008
USA
13th ISPNO
Chicago, IL, USA (Goldman, Tomita)
2006
Japan
12th ISPNO
Nara, Japan (Matsutani)
2004
USA
11th ISPNO
Boston, MA, USA (Kieran, Black)
2002
United Kingdom
10th ISPNO
London, England (Michalski)
2000
USA
9th ISPNO
San Francisco, CA, USA (Berger, Packer)
1998
Italy
8th ISPNO
Rome, Italy (DiRocco)
1996
USA
7th ISPNO
Washington DC, USA (Packer)
1994
USA
6th ISPNO
Houston, TX, USA (Ater)
1993
France
5th ISPNO
Marseilles, France (Choux)
1992
Japan
4th ISPNO
Tokyo, Japan (Takakura)
1991
USA
3rd ISPNO
Philadelphia, PA, USA (Packer)
1989
USA
2nd ISPNO
Seattle, WA, USA (Bleyer, Packer)
1985
Japan
1st ISPNO
Toba, Japan (Kageyama)