The economy is based on commercial interests such as garments, trading, and small and medium enterprises. In the past few years the property business has been booming, with rapidly increasing real estate prices. Tourism is also a major contributor in the capital as more shopping and commercial centres open, making Phnom Penh one of the major tourist destinations in South East Asia along with Siem Reap and Sihanoukville. According to the World Travel and Tourism Council, tourism made up 19.2 percent (US$2,053 million) of Cambodia's GDP in 2009 and accounts for 13.7 percent of total employment. One of the most popular areas in Phnom Penh for tourists is Sisowath Quay, alongside the Tonle Sap River. Sisowath Quay is a five kilometre strip of road that includes restaurants, bars, and hotels.