Year Sterling (millions) 1997-12-31 27004 1998-12-31 25599 1999-12-31 25721 2000-12-31 26039 2001-12-31 31745 2002-12-31 30514 2003-12-31 32613 2004-12-31 37451 2005-12-31 51384 2006-12-31 57294