Quarter Sterling (millions) 2011-06-30 -8 2011-09-30 4 2011-12-31 -2 2012-03-31 0 2012-06-30 1 2012-09-30 -30 2012-12-31 14 2013-03-31 -1 2013-06-30 1 2013-09-30 31 2013-12-31 -35 2014-03-31 -12 2014-06-30 1 2014-09-30 -4 2014-12-31 16 2015-03-31 3 2015-06-30 -6 2015-09-30 7 2015-12-31 6 2016-03-31 23 2016-06-30 6 2016-09-30 9 2016-12-31 17 2017-03-31 9 2017-06-30 2 2017-09-30 -29 2017-12-31 -2 2018-03-31 30 2018-06-30 -34 2018-09-30 -18 2018-12-31 13 2019-03-31 -7 2019-06-30 2 2019-09-30 -1 2019-12-31 13 2020-03-31 -13 2020-06-30 4 2020-09-30 2 2020-12-31 23 2021-03-31 -5 2021-06-30 9 2021-09-30 20 2021-12-31 -28 2022-03-31 97 2022-06-30 -51 2022-09-30 -9 2022-12-31 33 2023-03-31 28 2023-06-30 41 2023-09-30 -12 2023-12-31 0