Year Sterling (millions) 1998-12-31 40 1999-12-31 0 2000-12-31 49 2001-12-31 57 2002-12-31 77 2003-12-31 72 2004-12-31 80 2005-12-31 47 2006-12-31 51 2007-12-31 61 2008-12-31 49 2010-12-31 0 2011-12-31 0 2012-12-31 0