Year	Sterling (millions)
1997-12-31	13
1998-12-31	27
1999-12-31	42
2000-12-31	58
2001-12-31	5
2002-12-31	39
2003-12-31	0
2004-12-31	0
2005-12-31	15
2006-12-31	47
2007-12-31	0
2008-12-31	226
2009-12-31	0
2010-12-31	71
2011-12-31	75
2012-12-31	205
2013-12-31	199
2014-12-31	158
2015-12-31	160
2016-12-31	123
2017-12-31	193
2018-12-31	348
2019-12-31	306