Table 1: System Operating Profit/(Loss) per Enplanement,,,,,,,,,
Passenger Airlines by Group,,,,,,,,,
Ranked by First Quarter 2006 Performance,,,,,,,,,
(Dollars of Profit or Loss per Enplanement),,,,,,,,,
 1Q 2006 Rank ,,1Q 2001,1Q 2002,1Q 2003,1Q 2004,1Q 2005,1Q 2006,"Change
1Q 2001-1Q 2006",
1,Low-Cost Carriers,7.79,0.19,0.95,1.97,3.33,2.75,-5.04,
2,Network Carriers,-9.57,-28.01,-34.57,-12.88,-14.80,-6.15,3.42,
,14-Carrier Average,-5.92,-21.64,-25.64,-8.93,-9.92,-3.51,2.41,
,Group Dollar Difference,17.36,28.20,35.52,14.85,18.13,8.90,-8.46,
"Source: Bureau of Transportation Statistics, Form 41 Airline Financial Data and T-100 Market Data.",,,,,,,,,