Year Sterling (millions) 1997-12-31 4500 1998-12-31 6446 1999-12-31 11359 2000-12-31 18351 2001-12-31 14098 2002-12-31 12676 2003-12-31 12952 2004-12-31 16053 2005-12-31 21732 2006-12-31 21120 2007-12-31 31549 2008-12-31 29888 2009-12-31 28260 2010-12-31 27785 2011-12-31 23738 2012-12-31 24917 2013-12-31 30688 2014-12-31 30628 2015-12-31 41593 2016-12-31 45361 2017-12-31 54037 2018-12-31 58366 2019-12-31 69942