these departments. Economy Economic weight Skopje is a medium city at European level. Being the capital and largest city of North Macedonia, Skopje concentrates a large share of the national economy. The Skopje Statistical Region, which encompasses the City of Skopje and some neighbouring municipalities, produces 45.5% of the Macedonian GDP. In 2009, the regional GDP per capita amounted to US$6,565, or 155% of the Macedonian GDP per capita. This figure is, however, smaller than the one of neighboring Sofia (US$10,106), Sarajevo (US$10,048) or Belgrade (US$7,983), but higher than the one of Tirana (US$4,126). Because there are no other large cities in the country, and because of political and economical centralization, a large number of Macedonians living outside of Skopje work in the capital city. The dynamism of the city also encourages rural exodus, not only from North Macedonia, but also from Kosovo, Albania and Southern Serbia. Firms and activities In 2009, Skopje had 26,056 firms but only 145 of them had a large size. The large majority of them are either small (12,017) or very small (13,625). A large share of the firms deal with trade of goods (9,758), 3,839 are specialized in business and real estate, and 2,849 are manufacturers. Although few in number, large firms account for 51% of the local production outside finance. The city industry is dominated by food processing, textile, printing and metal processing. In 2012, it accounted for 30% of the city GDP. Most of the industrial areas are in Gazi Baba municipality, on the major routes and rail lines to Belgrade and Thessaloniki. Notably, the ArcelorMittal and Makstil steel plants are there, and also the Skopje Brewery. Other zones are between Aerodrom and Kisela Voda, along the railway to Greece. These zones comprise Alkaloid Skopje (pharmaceuticals), Rade Končar (electrical supplies), Imperial Tobacco, and Ohis (fertilizers). Two special economic zones also exist, around the airport and the Okta refinery. They have attracted several foreign companies, such as Johnson Controls, Johnson Matthey and Van Hool. As the country's financial capital, Skopje is the seat of the Macedonian Stock Exchange, of the National Bank and of most of the country's banking, insurance and telecommunication companies, such as Makedonski Telekom, Komercijalna banka Skopje and Stopanska Banka. The services sector produces 60% of the city GDP. Besides many small traditional shops, Skopje has two large markets, the "Zelen Pazar" (green market) and the "Bit Pazar" (flea market).