Tourism makes up about 6% of the country's economy. Thailand was the most visited country in Southeast Asia in 2013, according to the World Tourism Organisation. Estimates of tourism receipts directly contributing to the Thai GDP of 12 trillion baht range from 9 percent (1 trillion baht) (2013) to 16 percent. When including the indirect effects of tourism, it is said to account for 20.2 percent (2.4 trillion baht) of Thailand's GDP.