Year Sterling (millions) 1997-12-31 8564 1998-12-31 8803 1999-12-31 9226 2000-12-31 9905 2001-12-31 10008 2002-12-31 10552 2003-12-31 11544 2004-12-31 12690 2005-12-31 12696 2006-12-31 13637 2007-12-31 15094 2008-12-31 15358 2009-12-31 15699 2010-12-31 15762 2011-12-31 16103 2012-12-31 16079 2013-12-31 17089 2014-12-31 17504 2015-12-31 17858 2016-12-31 18024 2017-12-31 18973 2018-12-31 18570 2019-12-31 19239 2020-12-31 22012 2021-12-31 24258 2022-12-31 24822 2023-12-31 23607