Year Sterling (millions) 1997-12-31 4496 1998-12-31 4554 1999-12-31 5579 2000-12-31 6852 2001-12-31 7074 2002-12-31 8272 2003-12-31 9508 2004-12-31 10776 2005-12-31 12426 2006-12-31 14016 2007-12-31 16203 2008-12-31 16353 2009-12-31 17562 2010-12-31 16975 2011-12-31 11470 2012-12-31 11384 2013-12-31 12306 2014-12-31 11152 2015-12-31 12110 2016-12-31 14258 2017-12-31 15794 2018-12-31 17342 2019-12-31 17700 2020-12-31 19244 2021-12-31 20858 2022-12-31 22776 2023-12-31 22739