Year Sterling (millions) 1997-12-31 17984 1998-12-31 16599 1999-12-31 15140 2000-12-31 16596 2001-12-31 13987 2002-12-31 14776 2003-12-31 13027 2004-12-31 13227 2005-12-31 13520 2006-12-31 20517 2007-12-31 14685 2008-12-31 18665 2009-12-31 16064 2010-12-31 15895 2011-12-31 16462 2012-12-31 17999 2013-12-31 21056 2014-12-31 22515 2015-12-31 25577 2016-12-31 28659 2017-12-31 30544 2018-12-31 34487 2019-12-31 37842 2020-12-31 45214 2021-12-31 58860 2022-12-31 56972 2023-12-31 59869