Year	Sterling (millions)
2004-12-31	29719
2005-12-31	29765
2006-12-31	36001
2007-12-31	32115
2008-12-31	-20942
2009-12-31	-10559
2010-12-31	2753
2011-12-31	11190
2012-12-31	4183
2013-12-31	18296
2014-12-31	24186
2015-12-31	25338
2016-12-31	24901
2017-12-31	26613
2018-12-31	17021