Year Sterling (millions) 1997-12-31 4023 1998-12-31 4058 1999-12-31 5022 2000-12-31 6262 2001-12-31 6596 2002-12-31 7648 2003-12-31 8791 2004-12-31 10047 2005-12-31 11366 2006-12-31 13076 2007-12-31 15217 2008-12-31 15234 2009-12-31 16332 2010-12-31 15813 2011-12-31 10524 2012-12-31 10295 2013-12-31 10953 2014-12-31 10037 2015-12-31 10635 2016-12-31 12406 2017-12-31 13485 2018-12-31 14915 2019-12-31 15404 2020-12-31 17224 2021-12-31 18706 2022-12-31 19803 2023-12-31 19827