Year	Sterling (millions)
2004-12-31	-290
2005-12-31	-354
2006-12-31	-614
2007-12-31	-268
2008-12-31	94
2009-12-31	34
2010-12-31	87
2011-12-31	320
2012-12-31	-249
2013-12-31	-561
2014-12-31	-433
2015-12-31	-389