1 The O&D Survey indices are computed using the
Fisher Index formula, which differs from the formulas used to
compute the Bureau of Labor Statistics Airline Fare Consumer Price
Index.
NOTE: These
data were developed for research purposes only and are not official
BTS data.
SOURCE: U.S.
Department of Transportation, Bureau of Transportation Statistics
(BTS) and U.S. Department of Labor, Bureau of Labor Statistics,
calculations based on data from BTS's quarterly Passenger Origin & Destination Survey, March 2003.