Year Sterling (millions) 1998-12-31 46 1999-12-31 68 2000-12-31 46 2001-12-31 52 2002-12-31 96 2003-12-31 60 2004-12-31 51 2005-12-31 93 2006-12-31 221 2007-12-31 264 2008-12-31 359 2009-12-31 534 2010-12-31 501 2011-12-31 431 2012-12-31 326