Table 6: Quarter-to-Quarter Changes in the Air Travel Price Index (ATPI) for the Latest Five Quarters,,,,,,, U.S.-Origin Itineraries (First Quarter 1995 = 100),,,,,,, Quarter and Year,ATPI,Percent Change from Previous Quarter,,,,, Fourth Quarter 2005,111.54,2.2,,,,, First Quarter 2006,114.57,2.7,,,,, Second Quarter 2006,120.61,5.3,,,,, Third Quarter 2006,117.43,-2.6,,,,, Fourth Quarter 2006,114.03,-2.9,,,,, Source: BTS - Based on calculations using data from the BTS Passenger Origin and Destination (O&D) Survey,,,,,,, Note: Quarter-to-Quarter changes may be affected by seasonal factors,,,,,,,