Year Sterling (millions) 1998-12-31 5 1999-12-31 4 2000-12-31 6 2001-12-31 6 2002-12-31 4 2003-12-31 10 2004-12-31 9 2005-12-31 5 2006-12-31 5 2007-12-31 8 2008-12-31 14 2009-12-31 24 2010-12-31 36 2011-12-31 17 2012-12-31 16