The International Air Transport Association (IATA) has said while global demand for air travel in June grew by 6.2% and capacity expanded by a much more cautious 4.5%, the growth trend since early 2012 has seen a slowdown. "The uncertainty that we see in the global economic situation is being reflected in air transport's performance," said IATA's director general and CEO, Tony Tyler. However, carriers in the Middle East were the strongest performers with demand growth of 18.2% outstripping a capacity expansion of 13.4%, the figures showed. Load factors stood at 78.6%. In contrast to the overall market, the growth trend in this region has been robust throughout 2012, gaining a further 1.9% in June compared to May, the industry body said.