Table 8: Passenger Revenue per Enplanement as a Percentage of System Operating Expenses (Excluding Fuel/Labor) per Enplanement,,,,,,,,,, Low-Cost Carriers,,,,,,,,,, Ranked by First Quarter 2006 Performance,,,,,,,,,, (Passenger Revenue per Enplanement as Percent of Cost per Enplanement),,,,,,,,,, 1Q 2006 Rank ,Low-Cost Carriers,1Q 2001,1Q 2002,1Q 2003,1Q 2004,1Q 2005,1Q 2006,"Change 1Q 2001-1Q 2006",, 1,Southwest,169,126,143,147,169,200,31,, 2,JetBlue,111,114,150,132,135,136,25,, 3,AirTran,122,97,116,106,103,118,-4,, 4,ATA,97,81,93,84,80,112,15,, 5,America West,67,39,83,100,105,110,43,, 6,Spirit,88,80,119,112,119,108,20,, 7,Frontier,69,64,48,48,78,84,15,, ,7-Carrier Average,119,90,115,116,128,145,26,, "Source: Bureau of Transportation Statistics, Form 41 Airline Financial Data and T-100 Market Data.",,,,,,,,,,