the World Travel & Tourism Council, travel and tourism directly contributed ZAR102 billion to South African GDP in 2012 and supports 10.3% of jobs in the country. Among the main attractions are the diverse and picturesque landscape, the game reserves and the highly regarded local wines. The country's borders were reopened on 1 October 2020, with some exceptions to tourists travelling from specific European countries and the US, due to high levels of COVID-19 activity taking place there. Financial services South Africa has a sophisticated financial structure, with the JSE Limited, the largest stock exchange on the African continent, ranking 17th in the world in terms of total market capitalisation, which is $1,005 Trillion as of August 2020. The banking industry, overseen by the South African Reserve Bank, is dominated by four local players: Nedbank, ABSA, Standard Bank and First Rand. These banks provide both retail and investment banking services as the sector has become highly competitive with the re-entry of many experienced foreign banks, which returned to the market in the mid-1990s, having left in the late 1980s. Banks operating in South Africa, when left short of liquidity, need to borrow from the SARB at a fluctuating repo rate, which, in turn, allows the central bank to monitor liquidity positions. Informal sector South Africa's informal sector contributes 8% of the country's GDP and supports 27% of all working people. The South African Local Economic Development Network values the informal economy at 28% of SA's GDP. Given the relevance of this input, there is a constant interest in developing actions on an inclusive urban planning for the working poor. Trade and investment Principal international trading partners of South Africa—besides other African countries—include Germany, the United States, China, Japan, the United Kingdom, Bangladesh and Spain. Chief exports include corn, diamonds, fruits, gold, metals and minerals, sugar, and wool. Machinery and transportation equipment make up more than one-third of the value of the country's imports. Other imports include chemicals, manufactured goods, and petroleum. As a result of a November 1993 bilateral agreement, the Overseas Private Investment Corporation (OPIC) can assist US investors in the South African market with services such as political risk insurance and loans and loan guarantees. In July 1996, the US and South Africa signed an investment fund protocol for a $120 million OPIC fund to make equity investments in South and Southern Africa. OPIC is establishing an additional