Source: US. Bureau of Economic Analysis
Source: US. Bureau of the Census
US. Bureau of Economic Analysis and US. Bureau of the Census, U.S. Exports of Services: Travel (for All Purposes Including Education) [ITXTAEM133S], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/ITXTAEM133S, October 23, 2016.