Finnish Romani is spoken by some 5,000–6,000 people; Romani and Finnish Sign Language are also recognized in the constitution. There are two sign languages: Finnish Sign Language, spoken natively by 4,000–5,000 people, and Finland-Swedish Sign Language, spoken natively by about 150 people. Tatar is spoken by a Finnish Tatar minority of about 800 people whose ancestors moved to Finland mainly during Russian rule from the 1870s to the 1920s.