"Table 4. Top 10 U.S. Airlines, ranked by August 2006 System* Scheduled Enplanements",,,,,,
"Passenger numbers in millions (000,000) ",,,,,,
August 2006 Rank,Carrier,August 2006 Enplaned Passengers,August 2005 Rank,August 2005 Enplaned Passengers,,
1,Southwest  ,8.7,2,8.1,,
2,American ,8.5,1,8.8,,
3,Delta,6.4,3,7.8,,
4,United ,6.2,4,6.0,,
5,Northwest ,5.0,5,5.1,,
6,Continental  ,4.2,6,3.9,,
7,US Airways ,3.1,7,3.6,,
8,America West  ,1.9,8,2.0,,
9,AirTran  ,1.8,11,1.5,,
10,SkyWest  ,1.7,12,1.5,,
"Source: Bureau of Transportation Statistics, T-100 Market",,,,,,
* System equals domestic plus international,,,,,,
Note: Percentage changes based on numbers prior to rounding.,,,,,,