"Cargo traffic slowed for most of the year as business confidence deteriorated in light of the looming Eurozone debt crisis," according to a written statement by ACI World Director Angela Gittens, who previously led Atlanta's airport. "Despite economic instability and political unrest in many regions of the world, overall, airports continued to experience sustained global passenger growth" over 2010.
Separately, the U.S. Bureau of Transportation Statistics earlier reported that Atlanta-based Delta Air Lines carried more passengers worldwide than any other U.S. airline in 2011. Southwest Airlines came in No. 1 in domestic passengers for the eighth year in a row.