Cambodia Head of State : King Norodom Sihamoni Prime Minister Hun Sen Capital : Phnom Penh Land area :  181,035 sq km (69,898 sq miles) Population : 13.7 million (via UN, 2006) Major Language : Khmer Major Religion : Buddhism Life expectancy : 52 years (men), 60 years (women) (UN) Monetary Unit : 1 riel = 100 sen Main exports : Clothing, timber, rubber Per Capita Income : US $380 (World Bank, 2006) Internet domain :  .kh Intl Dialling Code : +855 Website :