Year Sterling (millions) 1998-12-31 0 2001-12-31 168 2002-12-31 99 2003-12-31 77 2004-12-31 2 2005-12-31 5 2006-12-31 6 2007-12-31 2 2008-12-31 3 2010-12-31 0 2011-12-31 2 2012-12-31 2