Year Sterling (millions) 1997-12-31 22 1998-12-31 15 1999-12-31 14 2000-12-31 0 2001-12-31 182 2002-12-31 311 2003-12-31 1317 2004-12-31 970 2005-12-31 1377 2006-12-31 674 2007-12-31 327 2008-12-31 394 2009-12-31 121 2010-12-31 140 2011-12-31 303 2012-12-31 167 2013-12-31 107 2014-12-31 18 2015-12-31 70 2016-12-31 197 2017-12-31 151 2018-12-31 374 2019-12-31 555 2020-12-31 451 2021-12-31 370 2022-12-31 224 2023-12-31 156