Year Sterling (millions) 1998-12-31 10 1999-12-31 9 2000-12-31 11 2001-12-31 11 2002-12-31 9 2003-12-31 13 2004-12-31 18 2005-12-31 20 2006-12-31 14 2007-12-31 12 2008-12-31 6 2009-12-31 2 2010-12-31 4 2011-12-31 2 2012-12-31 1