The UAE\'s current account surplus quadrupled to Dh112.7 billion ($30.7 billion) in 2011 as both crude and non-oil exports soared, the central bank\'s annual report showed on Thursday. The surplus surged to 8.5 per cent of gross domestic product last year from 2.4 per cent, or Dh26.6 billion, in 2010, according to a Reuters calculation. The 2011 calculation is based on a GDP estimate by the International Monetary Fund since the UAE\'s statistics office has yet to release GDP data for last year. The Opec member\'s 2010 balance of payments data has been revised. Last year\'s outcome is smaller than the IMF estimate for a surplus of 9.2 per cent of GDP, released following regular consultations with the country in February and March. The value of UAE hydrocarbon exports surged nearly 50 per cent to Dh409.9bn last year ($111bn), helped by robust oil prices and higher output as a part of the Opec drive to help cover shortfalls due to a civil war in Libya. Crude accounted for 81 per cent of hydrocarbon exports of the UAE, one of the world\'s top five oil exporters, with the rest almost evenly divided between gas and petroleum products. A Reuters poll in March showed analysts expecting the UAE\'s hydrocarbon export revenue of $110bn in 2012. Non-oil exports jumped 22 per cent to Dh228.0bn, while re-exports rose 23 per cent to Dh396.5bn, the data showed. Imports to the $360bn economy, the second largest in the Arab world, were also up 23 per cent last year, at Dh742.4bn. The net balance on the UAE capital and financial account turned negative in 2011, reaching Dh60.4bn, which indicates a net outflow of capital from the Gulf country, the central bank said. \"This was due mainly to a net outflow of capital by the public sector, in the amount of Dh95.0bn, while the net inflow of private capital was in the amount of Dh34.6bn in 2011,\" it said. Direct investment soared 40 per cent to Dh28.2bn in 2011, the highest level since Dh50.4bn in 2008. Remittances sent home by UAE nationals working abroad rose to Dh41.2bn last year from Dh38.8bn in 2010, the report showed. The UAE, which has one of the highest incomes per capita globally, served as a safe haven for last year for foreign capital seeking a refuge from the wave of social unrest in the Middle East and North Africa. The central bank\'s foreign currency assets increased to Dh169.4bn in 2011 from Dh153.4bn in the previous year. Its investments abroad into highly rated securities, government bonds and treasury bills rose to Dh72.3bn from Dh68.4bn in 2010, the report said. The central bank did not give further details on the nature of its investments. It has traditionally kept the majority of its reserves in dollar-denominated assets due to its currency peg to the US dollar. The UAE\'s economic growth is forecast to ease to 3.1 per cent this year, a Reuters poll showed in March, from the IMF estimated 4.9 per cent in 2011, partly due to a global slowdown.