Year Sterling (millions) 1998-12-31 3 1999-12-31 9 2000-12-31 7 2001-12-31 5 2002-12-31 7 2003-12-31 7 2004-12-31 6 2005-12-31 7 2006-12-31 10 2007-12-31 8 2008-12-31 9 2009-12-31 6 2010-12-31 8 2011-12-31 21 2012-12-31 8