Year Sterling (millions) 1997-12-31 10377 1998-12-31 10397 1999-12-31 12150 2000-12-31 15017 2001-12-31 15278 2002-12-31 16466 2003-12-31 17962 2004-12-31 17741 2005-12-31 19472 2006-12-31 21345 2007-12-31 25483 2008-12-31 23874 2009-12-31 22957 2010-12-31 19937 2011-12-31 13963 2012-12-31 12664 2013-12-31 11369 2014-12-31 10762 2015-12-31 11198 2016-12-31 11953 2017-12-31 11982 2018-12-31 11055 2019-12-31 11128 2020-12-31 14201 2021-12-31 13998 2022-12-31 12699 2023-12-31 11767