| Offical language since | Language | % Correct |
|---|---|---|
| 1958 | German | 97%
|
| 1973 | English | 90%
|
| 1986 | Spanish | 90%
|
| 1958 | French | 83%
|
| 1958 | Italian | 83%
|
| 1995 | Swedish | 83%
|
| 1995 | Finnish | 73%
|
| 1973 | Danish | 70%
|
| 2004 | Polish | 70%
|
| 1986 | Portuguese | 67%
|
| 1958 | Dutch | 63%
|
| 2007 | Bulgarian | 60%
|
| 2007 | Romanian | 60%
|
| 2013 | Croatian | 57%
|
| 2004 | Czech | 57%
|
| 1981 | Greek | 57%
|
| 2004 | Hungarian | 47%
|
| 2004 | Slovak | 47%
|
| 2004 | Estonian | 43%
|
| 2004 | Latvian | 43%
|
| 2004 | Lithuanian | 43%
|
| 2004 | Slovenian | 43%
|
| 2007 | Irish | 33%
|
| 2004 | Maltese | 33%
|