Year Sterling (millions) 1998-12-31 20 1999-12-31 3 2000-12-31 11 2001-12-31 10 2002-12-31 7 2003-12-31 6 2004-12-31 6 2005-12-31 5 2006-12-31 5 2007-12-31 5 2008-12-31 6 2012-12-31 0