Year Sterling (millions) 1997-12-31 291 1998-12-31 170 1999-12-31 150 2000-12-31 135 2001-12-31 118 2002-12-31 58 2003-12-31 104 2004-12-31 170 2005-12-31 222 2006-12-31 247 2007-12-31 526 2008-12-31 888 2009-12-31 391