Year Sterling (millions) 1997-12-31 390 1998-12-31 416 1999-12-31 441 2000-12-31 487 2001-12-31 544 2002-12-31 519 2003-12-31 525 2004-12-31 449 2005-12-31 463 2006-12-31 504 2007-12-31 493 2008-12-31 453 2009-12-31 405 2010-12-31 381 2011-12-31 328 2012-12-31 326 2013-12-31 284 2014-12-31 288 2015-12-31 286 2016-12-31 371 2017-12-31 417 2018-12-31 408 2019-12-31 369 2020-12-31 404 2021-12-31 414 2022-12-31 414 2023-12-31 398