Year	Sterling (millions)
1997-12-31	8
1998-12-31	9
1999-12-31	4
2000-12-31	3
2001-12-31	2
2002-12-31	3
2003-12-31	4
2004-12-31	8
2005-12-31	3
2006-12-31	6
2007-12-31	3
2008-12-31	2
2009-12-31	2
2010-12-31	3
2011-12-31	2
2012-12-31	2
2013-12-31	3
2014-12-31	4
2015-12-31	3
2016-12-31	3
2017-12-31	2
2018-12-31	3
2019-12-31	1
2020-12-31	1
2021-12-31	1
2022-12-31	1
2023-12-31	0