Table 2: Year-to-Year Changes in the Air Travel Price Index (ATPI) Since 1995 ,,, "(for U.S.-Origin Itineraries, First Quarter to First Quarter, First Quarter 1995 = 100)",,, Year,ATPI,Percentage change from previous year, 1995,100.0,, 1996,98.7,-1.3, 1997,102.0,3.3, 1998,104.6,2.5, 1999,102.2,-2.3, ,,, 2000,106.1,3.8, 2001,116.9,10.2, 2002,108.2,-7.5, 2003,108.0,-0.2, 2004,108.6,0.6, ,,, 2005,103.9,-4.3, "SOURCE: BTS, based on calculations using data from the BTS Passenger Origin and Destination Survey.",,