Year	Sterling (millions)
2011-12-31	17189
2012-12-31	15133
2013-12-31	13869
2014-12-31	15911
2015-12-31	14971
2016-12-31	15248
2017-12-31	15878
2018-12-31	15880
2019-12-31	15457
2020-12-31	20330
2021-12-31	18443
2022-12-31	18445
2023-12-31	16948