Year Sterling (millions) 1998-12-31 23 1999-12-31 24 2000-12-31 37 2001-12-31 31 2002-12-31 31 2003-12-31 30 2004-12-31 28 2005-12-31 34 2006-12-31 38 2007-12-31 80 2008-12-31 32 2009-12-31 59 2010-12-31 82 2011-12-31 61 2012-12-31 57