Year Sterling (millions) 1998-12-31 31 1999-12-31 37 2000-12-31 51 2001-12-31 48 2002-12-31 40 2003-12-31 28 2004-12-31 49 2005-12-31 61 2006-12-31 89 2007-12-31 172 2008-12-31 121 2009-12-31 113 2010-12-31 122 2011-12-31 95 2012-12-31 101