The table below was created using data from multiple FAA sources. One source was an airport capacity study, done in 1991, that included extremely optimistic growth targets for the year 2000. The top 100 commercial airports were included in the study. Take a close at the middle columns, especially the column marked ‘forecast percent change per year 1990-2000’ and the next column, marked ‘actual percent change per year 1990-2000’. Although the 1990s were a period of strong airline hub growth, nearly all the growth was concentrated in the top 20+ airports. But, all top 100 airports together saw an average 1% growth per year, from 1990 to 2000 – roughly par with population growth. And, since 2000? In seventeen years, the top 100 commercial airports in the U.S. combined have averaged a 1.4% decline each year. This analysis does not reveal an economically healthy industry.