 The transition to a market economy in 1990, which has led to a shift towards service industries making up 43% of the city's GDP, along with rapid urbanization and population growth has so far correlated with an increase in GDP.Mining makes up the second-largest contributor to Ulaanbaatar's GDP at 25%.North of the city are several gold mines, including the Boroo Gold Mine, and foreign investment in the sector has allowed for growth and development.