Quarter Sterling (millions) 2008-03-31 683 2008-06-30 23 2008-09-30 229 2008-12-31 282 2009-03-31 -99 2009-06-30 22 2009-09-30 -318 2009-12-31 -893 2010-03-31 -148 2010-06-30 152 2010-09-30 -285 2010-12-31 -10 2011-03-31 -281 2011-06-30 99 2011-09-30 -506 2011-12-31 -135 2012-03-31 -322 2012-06-30 -31 2012-09-30 -183 2012-12-31 -51 2013-03-31 -320 2013-06-30 -674 2013-09-30 436 2013-12-31 -441 2014-03-31 -428 2014-06-30 -336 2014-09-30 75 2014-12-31 -350 2015-03-31 -376 2015-06-30 -291 2015-09-30 64 2015-12-31 -302 2016-03-31 -66 2016-06-30 -374 2016-09-30 -134 2016-12-31 13 2017-03-31 -44 2017-06-30 -27 2017-09-30 201 2017-12-31 205 2018-03-31 -431 2018-06-30 3 2018-09-30 133 2018-12-31 171 2019-03-31 -354 2019-06-30 -115 2019-09-30 215 2019-12-31 2