Annual passenger airline departures from 1948 to 2015. Data from <a rel="nofollow" class="external text" href="http://airlines.org/data/annual-results-u-s-airlines-2/">Airlines for America</a> and <a rel="nofollow" class="external text" href="http://www.rita.dot.gov/bts/acts/customized/table?adfy=1996&amp;adfm=1&amp;adty=2016&amp;adtm=12&amp;aos=6&amp;artd=1&amp;arti&amp;arts&amp;asts&amp;astns&amp;astt=3&amp;ascc&amp;ascp=1">US DOT</a>
<a href="//commons.wikimedia.org/wiki/User:Delphi234" title="User:Delphi234">Delphi234</a>
2016-04-04
<span class="int-own-work" lang="en">Own work</span>