Year Sterling (millions) 1997-12-31 18573 1998-12-31 15401 1999-12-31 11933 2000-12-31 9185 2001-12-31 5265 2002-12-31 4459 2003-12-31 1696 2004-12-31 1346 2005-12-31 816 2006-12-31 956