German is the recognised official language, with more than 95% of the population speaking it as their first language. The official minority languages are Danish, Frisian, Sorbian, and Romani, while Low German, Danish, North Frisian, Sater Frisian, Lower Sorbian, Upper Sorbian, and Romani are recognized as regional languages under the European Charter for Regional or Minority Languages. German is also the official language in Austria, and one of three official languages in Switzerland. Germany is quite uniform as a written language, but exists in many dialects (linguists say over 200) as a spoken language. Modern “standard German” has roots in the Middle High German dialects, particularly the Middle German dialect used by Martin Luther in translating the Bible in the 16th century.