Germany 1926
Austria 1935
Germany 1939
Saarland 1954
German Democratic Republic 1955
Saarland 1955
Saarland 1955
Saarland 1955
German Democratic Republic 1960
Germany 1961
Panama 1966
Niger 1967
Panama 1967
Saudi Arabia 1967
Ajman 1968
Ajman 1968
Ajman 1968
Ajman 1968
United Arab Emirates 1968
Czechoslovakia 1969
Ajman 1970
Ajman 1971
Albania 1971
Austria 1971
Benin 1971
Benin 1971
Burundi 1971
Dubai 1971
German Democratic Republic 1971
German Democratic Republic 1971
German Democratic Republic 1971
Germany 1971
Romania 1971
Rwanda 1971
United Arab Emirates 1971
United Arab Emirates 1971
West Berlin 1971
Ajman 1972
Ajman 1972
Ajman 1972
Germany 1972
United Arab Emirates 1972
Germany 1977
Democratic Republic of the Congo 1978
Djibouti 1978
Ghana 1978
Hungary 1978
Mongolia 1978
Paraguay 1978
Republic of the Congo 1978
France 1980
Germany 1980
Cook Islands 1986
Soviet Union 1987
German Democratic Republic 1990
Germany 1990
Sweden 1992
Angola 2000
Guinea-Bissau 2003
Germany 2006
Djibouti 2007
Germany 2008
Niger 2016
Austria 2017