Quarter Sterling (millions) 2007-12-31 14 2008-03-31 147 2008-06-30 53 2008-09-30 17 2008-12-31 32 2009-03-31 22 2009-06-30 13 2009-09-30 23 2009-12-31 79 2010-03-31 1 2010-06-30 1 2010-09-30 56 2010-12-31 24 2011-03-31 6 2011-06-30 8 2011-09-30 3 2011-12-31 4 2012-03-31 2 2012-06-30 0 2012-09-30 2 2012-12-31 10 2013-03-31 0 2013-06-30 1 2013-09-30 11 2013-12-31 13 2014-03-31 1 2014-06-30 2 2014-09-30 1 2014-12-31 242 2015-03-31 1 2015-12-31 1 2016-03-31 0 2016-06-30 0 2016-09-30 1 2016-12-31 1 2017-03-31 0 2017-06-30 93 2017-09-30 423 2017-12-31 8 2018-03-31 1 2018-06-30 1 2018-09-30 0 2018-12-31 0 2019-03-31 0 2019-06-30 3 2019-09-30 0 2019-12-31 1