Year Sterling (millions) 2011-12-31 40342 2012-12-31 38081 2013-12-31 41079 2014-12-31 35652 2015-12-31 20550 2016-12-31 20178 2017-12-31 20468 2018-12-31 20359 2019-12-31 19448 2020-12-31 20236 2021-12-31 20721 2022-12-31 18112 2023-12-31 17762