Quarter Sterling (millions) 2011-06-30 11 2011-09-30 -500 2011-12-31 50 2012-03-31 -48 2012-06-30 -46 2012-09-30 123 2012-12-31 -196 2013-03-31 -31 2013-06-30 19 2013-09-30 -45 2013-12-31 22 2014-03-31 -33 2014-06-30 40 2014-09-30 -49 2014-12-31 50 2015-03-31 -68 2015-06-30 51 2015-09-30 -63 2015-12-31 55 2016-03-31 -22 2016-06-30 3 2016-09-30 -43 2016-12-31 -6 2017-03-31 44 2017-06-30 26 2017-09-30 2 2017-12-31 55 2018-03-31 -83 2018-06-30 5 2018-09-30 16 2018-12-31 10 2019-03-31 6 2019-06-30 -1 2019-09-30 -18 2019-12-31 32 2020-03-31 -144 2020-06-30 243 2020-09-30 31 2020-12-31 16 2021-03-31 -81 2021-06-30 -12 2021-09-30 -8 2021-12-31 62 2022-03-31 -51 2022-06-30 -21 2022-09-30 -34 2022-12-31 17 2023-03-31 79 2023-06-30 5 2023-09-30 -56 2023-12-31 -6