Quarter Sterling (millions) 2004-03-31 355 2004-06-30 1213 2004-09-30 436 2004-12-31 673 2005-03-31 671 2005-06-30 1409 2005-09-30 623 2005-12-31 707 2006-03-31 1007 2006-06-30 1390 2006-09-30 816 2006-12-31 919 2007-03-31 1206 2007-06-30 1757 2007-09-30 777 2007-12-31 738 2008-03-31 560 2008-06-30 1441 2008-09-30 832 2008-12-31 641 2009-03-31 1068 2009-06-30 1325 2009-09-30 600 2009-12-31 328 2010-03-31 459 2010-06-30 989 2010-09-30 611 2010-12-31 709 2011-03-31 386 2011-06-30 1084 2011-09-30 602 2011-12-31 449 2012-03-31 626 2012-06-30 1610 2012-09-30 544 2012-12-31 436 2013-03-31 479 2013-06-30 810 2013-09-30 539 2013-12-31 517 2014-03-31 528 2014-06-30 782 2014-09-30 656 2014-12-31 746 2015-03-31 739 2015-06-30 1075 2015-09-30 1105 2015-12-31 755 2016-03-31 596 2016-06-30 784 2016-09-30 706 2016-12-31 536 2017-03-31 470 2017-06-30 778 2017-09-30 707 2017-12-31 583 2018-03-31 712 2018-06-30 1099 2018-09-30 618 2018-12-31 526