It is estimated that tourism accounts for 3% of Scotland's economic output. Scotland is a well-developed tourist destination with attractions ranging from unspoilt countryside, mountains and abundant history. Tourism is responsible for sustaining 200,000 jobs mainly in the service sector, with tourist spending averaging at £4bn per year [21]. Domestic tourists (those from the United Kingdom) make up the bulk of visitors to Scotland. In 2002, for example, UK visitors made 18.5 million visits to Scotland, staying 64.5 million nights and spending £3.7 billion. In contrast, overseas residents made 1.58 million visits to Scotland, staying 15 million nights and spending £806 million. In terms of overseas visitors, those from the United States made up 24% of visits to Scotland, with the United States being the largest source of overseas visitors, and Germany (9%), France (8%), Canada (7%) and Australia (6%), following behind. [22]