Year Sterling (millions) 1997-12-31 2214 1998-12-31 2217 1999-12-31 2316 2000-12-31 2470 2001-12-31 2729 2002-12-31 2849 2003-12-31 2794 2004-12-31 3168 2005-12-31 3080 2006-12-31 3251 2007-12-31 3558 2008-12-31 3561 2009-12-31 3864 2010-12-31 4744 2011-12-31 4163 2012-12-31 4448 2013-12-31 4133 2014-12-31 4769 2015-12-31 5040 2016-12-31 5921 2017-12-31 6209 2018-12-31 6747 2019-12-31 6647 2020-12-31 10989 2021-12-31 10794 2022-12-31 10396 2023-12-31 10460