Bavarian, alternately Austro-Bavarian, is a group of Upper German varieties spoken in the south-east of the German language area, including the German state of Bavaria, most of Austria, and South Tyrol in Italy. Prior to 1945, Bavarian was also prevalent in parts of the southern Sudetenland and western Hungary. Bavarian is spoken by approximately 12 million people in an area of around 125,000 square kilometres (48,000 sq mi), making it the largest of all German dialects. In 2008, 45 percent of Bavarians claimed to use only dialect in everyday communication.