1900-01-01:

1921-07-25:

1944-09-05:

1950-05-09:

1951-04-18:

1955-12-08:

1974-10-11:

1985-06-29:

1986-05-26:

1900-01-01:

1921-07-25:

1944-09-05:

1950-05-09:

1951-04-18:

1955-12-08:

1974-10-11:

1985-06-29:

1986-01-01:

1986-05-26:

2007-01-01:

2012-01-01:

2013-01-01:

2013-07-01:

1900-01-01:

SWITZERLAND

1921-07-25:

BELGIUM +

LUXEMBURG +

1944-09-05:

BELGIUM +

LUXEMBURG IN EXILE +

NETHERLANDS IN EXILE +

1950-05-09:

BELGIUM +

WEST GERMANY +

FRENCH UNION +

ITALY +

LUXEMBOURG +

NETHERLANDS +

1973-01-01:

BELGIUM +

WEST GERMANY +

DENMARK +

FRANCE +

IRELAND +

ITALY +

LUXEMBOURG +

NETHERLANDS +

UNITED KINGDOM +

1981-01-01:

BELGIUM +

WEST GERMANY +

DENMARK +

FRANCE +

GREECE +

IRELAND +

ITALY +

LUXEMBOURG +

NETHERLANDS +

UNITED KINGDOM +

1986-01-01:

BELGIUM +

WEST GERMANY +

DENMARK +

SPAIN +

FRANCE +

GREECE +

IRELAND +

ITALY +

LUXEMBOURG +

NETHERLANDS +

PORTUGAL +

UNITED KINGDOM +

1993-11-01:

EUROPEAN UNION

1900-01-01:

  Genève

1921-07-25:

  Bruxelles + Luxemburg

1940-05-10:

  Brüssel + Luxemburg

1944-09-03:

  Bruxelles + Luxemburg

1944-09-05:

  Bruxelles

1950-05-09:

  Paris

1952-09-10:

  Bruxelles + Luxembourg + Strasbourg

1900-01-01:

  LIGUE-DE-LA-PAIX

1921-07-25:

  BELGIQUE-LUXEMBOURG

1944-09-05:

  BENELUX

1950-05-09:

  EUROPA

1900-01-01:

1921-07-25:

1944-09-05:

1948-03-17:

1950-05-09:

1951-04-18:

1952-09-10:

1957-03-25:

1967-07-01:

1981-01-01:

1993-11-01:

1952-01-01:

1957-03-25:

1958-01-31:

1967-07-01:

1970-07-02:

1972-03-22:

1973-01-09:

1977-01-06:

1977-01-11:

1981-01-06:

1981-01-12:

1985-01-05:

1993-11-01:

1995-01-06:

1995-01-24:

1999-07-14:

1999-09-15:

2004-11-22:

2009-12-01:

2014-12-01:

2019-12-01: