Italy's official language is Italian; Ethnologue has estimated that there are about 55 million speakers of Italian in the country and a further 6.7 million outside of it, primarily in the neighboring countries and in the Italian diaspora worldwide. Italian, adopted by the central state after the unification of Italy, is a language based on the Florentine variety of Tuscan and is somewhat intermediate between the Italo-Dalmatian languages and the Gallo-Romance languages. Its development was also influenced by the Germanic languages of the post-Roman invaders. When Italy unified in 1861, only 3% of the population spoke Italian, even though an estimated 90% of Italians speak Italian as their L1 nowadays.