Year	Sterling
1997-12-31	20728
1998-12-31	23259
1999-12-31	23594
2000-12-31	24188
2001-12-31	23361
2002-12-31	26939
2003-12-31	27269
2004-12-31	27048
2005-12-31	31624
2006-12-31	32217
2007-12-31	37202
2008-12-31	38730
2009-12-31	33900
2010-12-31	32543
2011-12-31	30975
2012-12-31	29124
2013-12-31	28961
2014-12-31	34258
2015-12-31	33151
2016-12-31	35555
2017-12-31	38167
2018-12-31	40434
2019-12-31	39099