The economy of Switzerland is one of the world's most advanced, ranking first in the world since 2015 with a GDP per capita of about USD 90,000. Its success is largely due to social-political-economic stability, and robust service sector, particularly banking and tourism. The City of Zurich which is near to Davos is the most important economic centre of the country. While the country exports machinery and equipment, chemical- pharmaceutical products, gold, coal briquettes, watches, chocolates, textiles, and apparel it mainly imports raw materials, food- organic food, vegetable oils, cultured pearls, precious or semi-precious stones, precious metals, and electrical machinery equipment. The Swiss education system is one of the best in the world, and Nestle is probably the most universal Swiss brand.