Year Sterling (millions) 1997-12-31 6476 1998-12-31 7013 1999-12-31 7480 2000-12-31 7735 2001-12-31 7493 2002-12-31 7838 2003-12-31 8060 2004-12-31 8288 2005-12-31 9363 2006-12-31 9620 2007-12-31 9940 2008-12-31 10714 2009-12-31 11149 2010-12-31 11556 2011-12-31 12046 2012-12-31 13258 2013-12-31 14469 2014-12-31 15909 2015-12-31 17752 2016-12-31 17811 2017-12-31 18290 2018-12-31 18821 2019-12-31 18752 2020-12-31 19232 2021-12-31 18729 2022-12-31 18046 2023-12-31 17669