Still, airports in the United States continued to lead rankings of the world's busiest.

The airport continued to operate as a civil airport until circa 1985.

And planes and airports will continue to be crowded for much of the next two weeks.

Throughout the years the airport continued to improve.

But the airport continues to hear from the neighbors.

The airport continued to expand through the late 1930s, albeit slowly.

However, the old airport continued to service general aviation flights until October 1, 2010.

That trend was reversed in 2003 and the airport has continued to show improved operating results each quarter since.

In 1975, following the fall of Saigon, this airport continued to serve commercial flights.

These airports continue to grow and they place a huge burden on their surroundings.