Here's a look at the world's 10 fastest-growing airports, how many passengers they handled in 2011 and the percent increase in traffic since 2006.

Chongqing, China: 19.1 million, 137 percent

Abu Dhabi, United Arab Emirates: 12.4 million, 134 percent

Xi'an, China: 21.2 million, 126 percent

Xiamen, China: 15.8 million, 110 percent

Sao Paulo: 30.4 million, 83 percent

New Delhi: 35 million, 81 percent

Chengdu, China: 29.1 million, 79 percent

Dubai, United Arab Emirates: 51 million, 77 percent

Moscow: 22.6 million, 77 percent

Hangzhou, China: 17.5 million, 77 percent