Year	Sterling (millions)
2011-12-31	19936
2012-12-31	17525
2013-12-31	15816
2014-12-31	19991
2015-12-31	18446
2016-12-31	19863
2017-12-31	19499
2018-12-31	20976
2019-12-31	20458
2020-12-31	23735
2021-12-31	21222
2022-12-31	21514
2023-12-31	19237