Year Sterling (millions) 1997-12-31 4 1998-12-31 4 1999-12-31 4 2000-12-31 4 2001-12-31 3 2002-12-31 8 2003-12-31 0 2004-12-31 1 2005-12-31 0 2006-12-31 124 2007-12-31 324 2008-12-31 628 2009-12-31 225