Year Sterling (millions) 1997-12-31 83 1998-12-31 259 1999-12-31 451 2000-12-31 173 2001-12-31 354 2002-12-31 357 2003-12-31 591 2004-12-31 448 2005-12-31 411 2006-12-31 422 2007-12-31 608 2008-12-31 304 2009-12-31 178