Sprachenzählung; Demography (linguistics) ; Language census ; Written language ; Amtssprache; Official language; National language ; Religion; Language and religion ; Sprachenpolitik; Language management; Language politics ; History of language ; Minoritätensprache; Minority language ; Language norm ; Swedish ; Kaló; Caló; Zigeunersprache; Vlach-Romanī; Tsigane; Gypsy language ; Suomi; Finnish ; Meänkiele; Tornedalen Finnish ; Sâme; Saami; Lapp; Sami