Overall, cargo traffic in the U.S. dipped 1.3 percent, year-over-year, to 12.117 billion tonne miles in 2011. Unfortunately, the same problems that plagued the domestic airfreight sector last year are likely to continue in 2012, according to the ACMG study.

"The U.S. airfreight industry, once characterized by rapid double-digit growth, has gone through 10 to 15 years with no net expansion," ACMG managing director Robert Dahl said in a statement. "Part-year data for 2012 shows flat traffic versus 2011, so the chance of any significant rebound this year in traffic volume appears remote."

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