Year Sterling (millions) 1997-12-31 0 1998-12-31 65 1999-12-31 40 2000-12-31 0 2001-12-31 0 2002-12-31 0 2003-12-31 0 2004-12-31 0 2005-12-31 2 2006-12-31 89 2007-12-31 91 2008-12-31 73 2009-12-31 93