The economies of the UAE and five other Gulf nations are projected to nearly double to $2Tn (Dh7.34Bn) in the next 10 years and this will bolster their position in the global economic system, a Saudi investment firm said yesterday. The combined gross domestic product (GDP) of the six Gulf Co-operation Council (GCC) countries, which control nearly 45% of the world's proven oil wealth, is estimated to reach around $1Tn in real terms in 2010, said NCB Capital, an affiliate of the Saudi National Commercial Bank. According to Proleads, the GCC countries are investing as much as $690Bn in 578 projects in the oil, gas and petrochemicals sector."