Year Sterling (millions) 1998-12-31 0 1999-12-31 4 2000-12-31 0 2001-12-31 0 2002-12-31 0 2003-12-31 202 2004-12-31 237 2005-12-31 254 2006-12-31 259 2007-12-31 382 2008-12-31 575 2011-12-31 0 2012-12-31 0