Year	Sterling (millions)
2004-12-31	4196
2005-12-31	4913
2006-12-31	5725
2007-12-31	8127
2008-12-31	11965
2009-12-31	14216
2010-12-31	16567
2011-12-31	18834
2012-12-31	21047
2013-12-31	21486
2014-12-31	22277
2015-12-31	20776
2016-12-31	20368
2017-12-31	20682
2018-12-31	20333