Year Sterling (millions) 1997-12-31 5063 1998-12-31 5174 1999-12-31 6062 2000-12-31 6477 2001-12-31 6347 2002-12-31 5568 2003-12-31 5064 2004-12-31 5020 2005-12-31 5250 2006-12-31 5903 2007-12-31 6482 2008-12-31 6158 2009-12-31 4852 2010-12-31 4552 2011-12-31 4254 2012-12-31 3673 2013-12-31 3224 2014-12-31 3404 2015-12-31 3489 2016-12-31 3198 2017-12-31 3419 2018-12-31 3314 2019-12-31 3554 2020-12-31 4503 2021-12-31 4318 2022-12-31 4234 2023-12-31 3964