Year Sterling (millions) 1997-12-31 3574 1998-12-31 3855 1999-12-31 4109 2000-12-31 4552 2001-12-31 4829 2002-12-31 5294 2003-12-31 6215 2004-12-31 6367 2005-12-31 7137 2006-12-31 7800 2007-12-31 9163 2008-12-31 10285 2009-12-31 11199 2010-12-31 12744 2011-12-31 14838 2012-12-31 17455 2013-12-31 18093 2014-12-31 18626 2015-12-31 19327 2016-12-31 20592 2017-12-31 21359 2018-12-31 22061 2019-12-31 23760 2020-12-31 29160 2021-12-31 31075 2022-12-31 32830 2023-12-31 29780