Hijjah, 1431/Dec. 01, 2010, SPA -- Efforts to boost the global economic recovery began to sputter off during summer, which could lead to a weaker economic expansion of 3.1 per cent in 2011 and 3.5 per cent in 2012, a new UN economic study said Wednesday. The economic expansion projections for the coming two years would be insufficient to recover lost jobs across the world, dpa cited the study as saying. Among developed countries, growth prospects in European countries and Japan are "even dimmer" than in the United States, the report - World Economic Situation and Prospects in 2011 - said. "Assuming continued, albeit moderate, recovery in Germany, gross domestic product in the euro area is forecast to virtually stagnate at 1.3 per cent in 2011 and 1.9 per cent in 2012," the study said. It said the euro zone's growth was 1.6 per cent in 2010. The report said the US is suffering the longest and deepest recession since World War II and its current pace of recovery has been the weakest in its post-recession experience. The study projected US economic growth at 2.6 per cent in 2010, 2.2 per cent in 2011 and slight improvement of 2.8 per cent in 2012. Developing countries continued to drive the global economic recovery, but their output growth is expected to be moderate at 6 per cent in the 2011-2012 period, down from 7 per cent in 2010. China and India are leading in growth performance among developing countries, but at a moderate pace of around 7 per cent in the 2011-2012 period.