Year Sterling (millions) 1998-12-31 27 1999-12-31 24 2000-12-31 23 2001-12-31 22 2002-12-31 24 2003-12-31 24 2004-12-31 24 2005-12-31 24 2006-12-31 24 2007-12-31 24 2008-12-31 24 2012-12-31 0