Region
Argentina
1
Belgium
1
Canada
4
China
1
Erde
1
Etats-Unis d'Amérique
1
États-Unis
6
Former Soviet republics
1
Grande-Bretagne
1
Great Britain
2
Ireland
1
New England
1
OECD countries
2
Países de la OCDE
1
Portugal
1
Russia (Federation)
1
Southeast Asia
1
Sweden
1
Switzerland
1
Sydostasien
1
United States
20
Verenigde Staten
1