Quarter Sterling (millions) 2011-06-30 143 2011-09-30 146 2011-12-31 -8 2012-03-31 -10 2012-06-30 -144 2012-09-30 15 2012-12-31 -134 2013-03-31 20 2013-06-30 -110 2013-09-30 314 2013-12-31 455 2014-03-31 80 2014-06-30 185 2014-09-30 -36 2014-12-31 -82 2015-03-31 -84 2015-06-30 -286 2015-09-30 288 2015-12-31 -114 2016-03-31 -204 2016-06-30 -280 2016-09-30 257 2016-12-31 -212 2017-03-31 166 2017-06-30 -204 2017-09-30 257 2017-12-31 98 2018-03-31 -311 2018-06-30 -82 2018-09-30 99 2018-12-31 -256 2019-03-31 26 2019-06-30 116 2019-09-30 79 2019-12-31 -578 2020-03-31 -189 2020-06-30 424 2020-09-30 181 2020-12-31 -53 2021-03-31 45 2021-06-30 -256 2021-09-30 -77 2021-12-31 -58 2022-03-31 -26 2022-06-30 -92 2022-09-30 -27 2022-12-31 -171 2023-03-31 220 2023-06-30 -108 2023-09-30 -70 2023-12-31 -49