Muscat's economy, like that of Oman, is dominated by trade. The more traditional exports of the city included dates, mother of pearl, and fish. Many of the souks of Muttrah sell these items and traditional Omani artefacts. Petroleum Development Oman has been central to Muscat's economy since at least 1962 and is the country's second largest employer, after the government. Its major shareholders include Royal Dutch/Shell, Total, and Partex and its production is estimated to be about . Muscat also has major trading companies such as the Suhail Bahwan Group, which is a trading partner for corporations such as Toshiba, Subaru, Seiko, Hewlett Packard, General Motors, RAK Ceramics; Saud Bahwan Group whose trading partners are Toyota, Daihatsu, KIA and Hertz Rent-a-Car; Zubair Automotive whose trading partners include Mitsubishi, and Chrysler brands such as Dodge; and Moosa AbdulRahman Hassan which operates as one of the oldest automotive agencies in the entire region having been established in 1927. The private Health Care sector of Muscat, Oman has numerous hospitals and clinics.