Quarter Sterling (millions) 2011-06-30 -2 2011-09-30 5 2011-12-31 -19 2012-03-31 -226 2012-06-30 7 2012-09-30 -2 2012-12-31 0 2013-03-31 9 2013-06-30 -11 2013-09-30 11 2013-12-31 -1 2014-03-31 -13 2014-06-30 -3 2014-09-30 6 2014-12-31 0 2015-03-31 1 2015-06-30 10 2015-09-30 -1 2015-12-31 15 2016-03-31 8 2016-06-30 -4 2016-09-30 -6 2016-12-31 17 2017-03-31 -16 2017-06-30 10 2017-09-30 -10 2017-12-31 15 2018-03-31 38 2018-06-30 -43 2018-09-30 -5 2018-12-31 -9 2019-03-31 -1 2019-06-30 9 2019-09-30 18 2019-12-31 -1 2020-03-31 15 2020-06-30 -25 2020-09-30 21 2020-12-31 61 2021-03-31 0 2021-06-30 20 2021-09-30 -19 2021-12-31 30 2022-03-31 -39 2022-06-30 28 2022-09-30 -44 2022-12-31 -9 2023-03-31 -10 2023-06-30 -22 2023-09-30 15 2023-12-31 -6