The economy of Odessa is largely based around its traditional role as a port city; during the Soviet period the city was home to the USSR's largest trading port, a role which it still retains today as independent Ukraine's busiest international port. The port complex contains an oil and gas transfer and storage facility, a cargo handling area and a large passenger port. In 2007 the Port of Odessa handled 31,368,000 tonnes of cargo. The port of Odessa is also one of the Ukrainian Navy's most important bases on the Black Sea. Rail transport is another important sector of the economy in Odessa, this is largely due to the role it plays in delivering goods and imports to and from the city's port. Industrial enterprises located in and around the city include those dedicated to fuel refinement, machine building, metallurgy, and other types of light industry such as food preparation, timber plants and chemical industry. Agriculture is a relatively important sector in the territories surrounding the city. The Seventh-Kilometer Market is a major commercial complex on the outskirts of the city where private traders now operate one of the largest market complexes in Eastern Europe. The market has roughly 6,000 traders and an estimated 150,000 customers per day. Daily sales, according to the Ukrainian periodical Zerkalo Nedeli, were believed to be as high as USD 20 million in 2004. With a staff of 1,200 (mostly guards and janitors), the market is also the region's largest employer. It is owned by local land and agriculture tycoon Viktor A. Dobriansky and three partners of his. Deribasovskaya Street is one of the city's most important commercial streets and a large number of the city's boutiques and higher-end shops can be found on it. In addition to this there are a number of large commercial shopping centres in the city. The 19th century shopping gallery Passage was, for a long time, the city's most upscale shopping district, and is to this day an important landmark of Odessa
