Quarter Sterling (millions) 2005-12-31 57 2006-03-31 15 2007-12-31 3 2008-03-31 20 2008-06-30 18 2008-09-30 25 2008-12-31 49 2009-03-31 2 2009-06-30 3 2009-09-30 10 2010-03-31 0 2011-03-31 1 2011-06-30 1 2011-09-30 3 2011-12-31 2 2012-03-31 3 2012-06-30 2 2012-09-30 4 2012-12-31 2 2013-03-31 3 2013-06-30 2 2013-09-30 2 2013-12-31 4 2014-03-31 3 2014-06-30 4 2014-09-30 2 2014-12-31 4 2015-03-31 5 2015-06-30 6 2015-09-30 2 2015-12-31 3 2016-03-31 3 2016-06-30 3 2016-09-30 3 2016-12-31 4 2017-03-31 1 2017-06-30 3 2017-09-30 2 2017-12-31 3 2018-03-31 9 2018-06-30 9 2018-09-30 33 2018-12-31 31 2019-03-31 24 2019-06-30 24 2019-09-30 28 2019-12-31 17 2020-03-31 12 2020-06-30 2 2020-09-30 4 2020-12-31 4 2021-03-31 4 2021-06-30 3 2021-09-30 3 2021-12-31 3 2022-03-31 5 2022-06-30 22 2022-09-30 57 2022-12-31 54