Year	Sterling
1997-12-31	13409
1998-12-31	15480
1999-12-31	17777
2000-12-31	17566
2001-12-31	18505
2002-12-31	15201
2003-12-31	13079
2004-12-31	12882
2005-12-31	12912
2006-12-31	12381
2007-12-31	13182
2008-12-31	17027
2009-12-31	14668
2010-12-31	15594
2011-12-31	14134
2012-12-31	14868
2013-12-31	13780
2014-12-31	15263
2015-12-31	18321
2016-12-31	18442
2017-12-31	18875
2018-12-31	21596
2019-12-31	21174
2020-12-31	22553
2021-12-31	21849
2022-12-31	21707
2023-12-31	20764