The Karachi stock index was up 49.4% in 2013 as the pro-business policies of the Sharif government are attracting foreign investment. From the beginning of May 2013 when Sharif was elected prime minister to the end of 2013, foreign investment flows into Pakistan reached $283 million, according to the Clearinghouse of Pakistan. Pakistan's government bonds are also attracting investors with yields declining from 11.69% on the ten year bonds to 7.54% by the end of 2013. Additional upswing sentiment comes from the government paying off $5 billion in debt that hurt investment in the energy sector. The oil and gas sector is about a third of the Karachi Stock Index. Total market capitalization on the Karachi Stock Index is $52 billion, and the largest company is Oil and Gas Development Company.