"TABLE 4.  Total Air Freight Exports and Imports via Chicago, IL: 1999 - 2003",,,,,
"(Short tons, thousands)",,,,,
"
",1999,2000,2001,2002,2003
Imports, 280 , 304 , 278 , 279 , 277 
Exports, 236 , 252 , 228 , 202 , 235 
Total, 516 , 556 , 506 , 481 , 512 
"SOURCE:  U.S. Department of Transportation, Bureau of Transportation Statistics, Form 41 Traffic - Segment Data, various years, as of Sept. 16, 2004.",,,,,