2009: Hungary, Legal Recognition of Hungarian Sign Language
"Hungarian Sign Language is the sign language of deaf people in Hungary.
There is historical evidence that Hungarian and Austrian Sign Language are related, but Bickford (2005) found that Hungarian, Slovak, and Czech Sign formed a cluster with Romanian, Bulgarian, and Polish Sign rather than with Austrian.
In November 2009 the Hungarian Parliament unanimously passed an act on Hungarian Sign Language and the protection of Hungarian Sign Language."
Source: https://en.wikipedia.org/wiki/Hungarian_Sign_Language
Source: http://wfdeaf.org/news/the-legal-recognition-of-national-sign-languages/