Tourism, commerce, and finance are the mainstays of Andorra's tiny, well-to-do economy, accounting for more than three-quarters of GDP. An estimated 9 million tourists visit annually, attracted by Andorra's duty-free status for some products and by its summer and winter resorts. Andorra's comparative advantage eroded when the borders of neighboring France and Spain opened, providing broader availability of goods and lower tariffs. The banking sector also contributes substantially to the economy. Agricultural production is limited - only 2% of the land is arable - and most food has to be imported. The principal livestock activity is sheep raising. Manufacturing output and exports consist mainly of perfumes and cosmetic products, products of the printing industry, electrical machinery and equipment, clothing, tobacco products, and furniture. Andorra is a member of the EU Customs Union and is treated as an EU member for trade in manufactured goods (no tariffs) and as a non-EU member for agricultural products.