Indonesia's airport passenger traffic increased to 60 million in 2011, up 15% from 2010, according to the Ministry of Transportation. About 8 million were international passengers, up 23% from 2010. After the Asian financial crisis in 1997 the government relaxed restrictions on setting up an airline to stimulate the economy. There are now 18 airlines offering scheduled flights, up from 13 in 2001. Garuda spun off a low cost carrier, Citilink, and Lion Air is starting premium carrier Batik Air in 2012. The middle class in Indonesia has grown from 80 million to 130 million since 2003 creating more passenger traffic. Existing infrastructure is struggling to cope with the demand for air travel and is falling behind.