Year	Sterling (millions)
1997-12-31	20
1998-12-31	0
1999-12-31	0
2000-12-31	0
2001-12-31	1
2002-12-31	1
2003-12-31	2
2004-12-31	1
2005-12-31	1
2006-12-31	2
2007-12-31	3
2008-12-31	4
2009-12-31	5
2010-12-31	5
2011-12-31	6
2012-12-31	9
2013-12-31	16
2014-12-31	27
2015-12-31	36
2016-12-31	52
2017-12-31	65
2018-12-31	106
2019-12-31	142
2020-12-31	185
2021-12-31	222
2022-12-31	237
2023-12-31	209