In 1967, Gibraltar enacted the Companies (Taxation and Concessions) Ordinance (now an Act), which provided for special tax treatment for international business. This was one of the factors leading to the growth of professional services such as private banking and captive insurance management. Gibraltar has several attractive attributes as a financial centre, including a common law legal system and access to the EU single market in financial services. The Financial Services Commission (FSC), which was established by an ordinance in 1989 (now an Act) that took effect in 1991, regulates the finance sector. In 1997, the Department of Trade and Industry established its Gibraltar Finance Centre (GFC) Division to facilitate the development the financial sector development. , Gibraltar has 0.103 Big Four accounting firm offices per 1,000 population, the second highest in the world after the British Virgin Islands, and 0.6 banks per 1,000 people, the fifth most banks per capita in the world. , there is very significant uncertainty on continuing access to the EU single market after the forthcoming Brexit.