Quarter Sterling (millions) 2010-03-31 -21 2010-06-30 -16 2010-09-30 6 2010-12-31 -7 2011-03-31 -9 2011-06-30 59 2011-09-30 -63 2011-12-31 69 2012-03-31 -54 2012-06-30 9 2012-09-30 4 2012-12-31 12 2013-03-31 6 2013-06-30 -2 2013-09-30 1 2013-12-31 -9 2014-03-31 -15 2014-06-30 16 2014-09-30 -10 2014-12-31 -10 2015-03-31 2 2015-06-30 1 2015-09-30 -16 2015-12-31 22 2016-03-31 -29 2016-06-30 12 2016-09-30 2 2016-12-31 1 2017-03-31 223 2017-06-30 -219 2017-09-30 4 2017-12-31 -5 2018-03-31 5 2018-06-30 0 2018-09-30 -2 2018-12-31 57 2019-03-31 276 2019-06-30 9 2019-09-30 -14 2019-12-31 -15 2020-03-31 1 2020-06-30 -4 2020-09-30 237 2020-12-31 -181 2021-03-31 13 2021-06-30 -5 2021-09-30 11 2021-12-31 62 2022-03-31 -144 2022-06-30 78 2022-09-30 -12 2022-12-31 64 2023-03-31 -154 2023-06-30 6 2023-09-30 28 2023-12-31 83