Year Sterling (millions) 2004-12-31 7340 2005-12-31 9957 2006-12-31 14047 2007-12-31 20589 2008-12-31 20039 2009-12-31 5438 2010-12-31 2360 2011-12-31 1901 2012-12-31 1648 2013-12-31 1434 2014-12-31 1602 2015-12-31 1518 2016-12-31 1169 2017-12-31 905 2018-12-31 1702