fund managers and in-house analysts covering it. Almost every asset class is managed both internally and externally. Overall between 70% and 80% of the organization's assets are managed outside, and over the last few years the fund has become more indexed which given its unique asset liability structure is somewhat perplexing. The Abu Dhabi Investment Authority (ADIA) is a major purchaser of U.S. institutional real estate through various sub-entities. It often buys partial interest ownerships with leading real estate managers. ADIA also invests in development projects including malls. Many of ADIA's investments have decreased substantially since investments were made at market peaks in 2007 and 2008. The $7 billion investment in Citigroup has lost approximately 90% of its value as of 26 November 2009, 2 years after it acquired a sizable stake in the bank. Its investments in global real-estate at the market top in 2008 have also decreased substantially in value. Though it talks of its long term success in generating returns, the fact that it has moved closer to the index and manages most of its funds through external third party fund managers shows that its tolerance for risk taking is greatly diminished over the years. However, ADIA's ratio of third-party fund managers is being actively managed. In 2006, between 70% and 80% of the organization's assets were managed outside with an aim to bring that down to between 60% and 70%. In the year 2005, Abu Dhabi Investment Company purchased 51 percent of shares of Massar (Company) from Abu Dhabi Power Corporation, a subsidiary of Abu Dhabi Water & Electricity Authority. On 27 May 2013, ADIA published its 2012 Review, with an overview of its activities during the past year as well as an explanation of its approach to investing – strategy, governance and risk management. Board of directors The board members currently serve for a period of three years, and can be renewed. They are appointed by Emiri decree. The current board dates back to the April 2010 reshuffle (Emiri decree n°4/2010) and it was fully renewed April 2013. Sultan bin Zayed Al Nahyan, Representative of His Highness the President of the State (UAE) Mohammed bin Zayed Al Nahyan Chairman, (Current Ruler of Abu Dhabi, Supreme Commander-in-chief of the UAE Armed Forces and President of the UAE) Mansour bin Zayed Al Nahyan, Deputy Prime Minister and Minister of Presidential Affairs (UAE) Hamed bin Zayed Al Nahyan,