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Table 21. International Available Seat-Miles (ASMs) on U.S. Airlines, Unadjusted

International ASMs (unadjusted) in billions (000,000,000), Scheduled service only

2013201420152016
January25.025.826.426.7
February22.723.123.324.5
March26.127.527.527.7
April26.026.827.527.8
May27.628.829.429.8
June28.830.230.531.1
July30.531.732.432.9
August30.131.131.931.9
September26.327.027.827.9
October26.126.527.027.4
November24.024.724.524.0
December25.626.627.027.3
Yr. Total318.8329.8335.2339.0
Notes: 

Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

Source: 

Bureau of Transportation Statistics, T-100 Segment