Members date of entry
- A - Austria: 1954
- AL - Albania: 1992
- AND - Andorra: 1996
- B - Belgium: 1949
- BG - Bulgaria: 1971
- BIH - Bosnia and Herzegovina: 1996
- BY - Belarus: 2003
- CH - Switzerland: 1949
- CY - Cyprus: 1996
- CZ - Czech Republic: 1949
- D - Germany: 1951
- DK - Denmark: 1949
- E - Spain: 1953
- EST - Estonia: 1992
- F- France: 1949
- FIN - Finland: 1949
- GB - United Kingdom: 1949
- GR - Greece: 1949
- H - Hungary: 1960
- HR - Croatia: 1992
- I - Italy: 1953
- IL - Israel: 1968
- IR - Islamic Republic of Iran: 1976
- IRL - Ireland: 1949
- IS - Iceland: 1970
- L - Luxembourg: 1949
- LT - Lithuania: 2003
- LV - Latvia: 1998
- M - Malta: 1985
- MA - Morocco: 1969
- MD - Moldova: 1997
- MK - F.Y.R.O.M.: 1994
- MNE - Montenegro: 2012
- N - Norway: 1949
- NL - The Netherlands: 1949
- P - Portugal: 1953
- PL - Poland: 1958
- RO - Romania: 1965
- RUS - Russia: 2009
- S - Sweden: 1949
- SK - Slovak Republic: 1949
- SLO - Slovenia: 1992
- SRB - Serbia: 1954
- TN - Tunisia: 1969
- TR - Turkey: 1964
- UA - Ukraine: 1997