Year	Sterling (millions)
2011-12-31	21939
2012-12-31	18000
2013-12-31	16018
2014-12-31	15223
2015-12-31	14903
2016-12-31	14585
2017-12-31	15452
2018-12-31	14987
2019-12-31	15508
2020-12-31	21267
2021-12-31	19860
2022-12-31	18693
2023-12-31	16145