Year Sterling (millions) 1997-12-31 216 1998-12-31 383 1999-12-31 676 2000-12-31 117 2001-12-31 143 2002-12-31 249 2003-12-31 54 2004-12-31 100 2005-12-31 1388 2006-12-31 17645 2007-12-31 21268 2008-12-31 51017 2009-12-31 142893