The Office for National Statistics estimated in 2008 that the public estate has a book value of £380 billion, which is about £6,000 for every UK resident.[3] In the mid-1990s, government real estate management functions were passed from the Property Services Agency to individual departments.[4] The National Audit Office stated in 2006 that the motive behind this change was that it brought greater clarity and accountability, although it also diminished economies of scale and synergies between departments.[6] Central government bodies adhere to the Civil Estate Co-ordination Protocol (CECP).[7] Government departments are accountable for managing and using their own property portfolio.