Year Sterling (millions) 1997-12-31 10885 1998-12-31 11398 1999-12-31 12228 2000-12-31 11316 2001-12-31 10993 2002-12-31 11259 2003-12-31 10369 2004-12-31 11627 2005-12-31 11344 2006-12-31 12565 2007-12-31 11485 2008-12-31 11488 2009-12-31 13066 2010-12-31 12571 2011-12-31 11897 2012-12-31 11276 2013-12-31 10677 2014-12-31 11816 2015-12-31 14372 2016-12-31 15642 2017-12-31 16351 2018-12-31 16135 2019-12-31 12922 2020-12-31 13091 2021-12-31 10640 2022-12-31 11538 2023-12-31 10455