Year Sterling (millions) 1997-12-31 5574 1998-12-31 4179 1999-12-31 5059 2000-12-31 7286 2001-12-31 8542 2002-12-31 8941 2003-12-31 8897 2004-12-31 16662 2005-12-31 20390 2006-12-31 20129 2007-12-31 20977 2008-12-31 11583 2009-12-31 8836 2010-12-31 18394 2011-12-31 13906 2012-12-31 15219 2013-12-31 16186 2014-12-31 9735 2015-12-31 11602 2016-12-31 15323 2017-12-31 13327 2018-12-31 18849 2019-12-31 17313 2020-12-31 15366 2021-12-31 16995 2022-12-31 21800 2023-12-31 23149