Table 14. System* Passenger Revenue Yield (Cents per Mile),,,,,,,
Network Carriers,,,,,,,
Ranked by 4th Quarter 2006 Revenue Yield ,,,,,,,
(Passenger Revenue per Revenue Passenger Mile in cents),,,,,,,
4Q 2006 Rank,Network Carriers,4th Quarter 2005 ,1st Quarter 2006 ,2nd Quarter 2006 ,3rd Quarter 2006 ,4th Quarter 2006 ,4th Quarter Passenger Revenue $(Millions)
1,US Airways,13.7,13.5,14.1,13.2,13.5,"1,217"
2,Alaska,12.5,12.8,13.6,13.9,13.0,552
3,American,12.3,12.9,12.8,12.8,12.8,"4,241"
4,Northwest,11.7,11.9,12.7,13.1,12.2,"2,164"
5,Continental,11.7,12.0,12.6,12.2,12.1,"2,234"
6,Delta,11.4,11.2,12.5,11.9,11.8,"2,784"
7,United,11.2,11.5,12.0,12.3,11.6,"3,284"
,Seven-Carrier Total,11.9,12.1,12.7,12.6,12.3,"16,476"
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data.,,,,,,,
* System = domestic + international,,,,,,,