Manmohan Singh (born 26 September 1932) is an Indian economist, academic, and politician who served as the 13th Prime Minister of India from 2004 to 2014. The first Sikh in office, Singh was also the first prime minister since Jawaharlal Nehru to be re-elected after completing a full five-year term. Born in Gah, Singh's family migrated to India during its partition in 1947. After obtaining his doctorate in economics from Oxford, Singh worked for the United Nations during 1966–69. He subsequently began his bureaucratic career when Lalit Narayan Mishra hired him as an advisor in the Ministry of Commerce and Industry. During the 1970s and 1980s, Singh held several key posts in the Government of India, such as Chief Economic Advisor (1972–76), governor of the Reserve Bank (1982–85) and head of the Planning Commission (1985–87).