Year	Sterling
1997-12-31	11905
1998-12-31	12603
1999-12-31	13664
2000-12-31	12263
2001-12-31	11989
2002-12-31	12424
2003-12-31	11144
2004-12-31	12329
2005-12-31	12315
2006-12-31	13960
2007-12-31	12932
2008-12-31	12741
2009-12-31	14217
2010-12-31	13637
2011-12-31	12965
2012-12-31	12125
2013-12-31	11726
2014-12-31	13062
2015-12-31	15563
2016-12-31	16973
2017-12-31	17727
2018-12-31	17583
2019-12-31	14048
2020-12-31	14103
2021-12-31	12165
2022-12-31	12812
2023-12-31	11623