The Port of Montevideo, in the northern part of Ciudad Vieja, is one of the major ports of South America and plays a very important role in the city's economy. The port has been growing rapidly and consistently at an average annual rate of 14 percent due to an increase in foreign trade. The city has received a US$20 million loan from the Inter-American Development Bank to modernize the port, increase its size and efficiency, and enable lower maritime and river transportation costs.