Year Sterling (millions) 1997-12-31 22 1998-12-31 12 1999-12-31 14 2000-12-31 0 2001-12-31 158 2002-12-31 173 2003-12-31 430 2004-12-31 275 2005-12-31 265 2006-12-31 91 2007-12-31 77 2008-12-31 29 2009-12-31 29 2010-12-31 57 2011-12-31 107 2012-12-31 60 2013-12-31 63 2014-12-31 18 2015-12-31 46 2016-12-31 119 2017-12-31 107 2018-12-31 269 2019-12-31 368 2020-12-31 406 2021-12-31 248 2022-12-31 71 2023-12-31 39