Year Sterling (millions) 1997-12-31 326 1998-12-31 329 1999-12-31 354 2000-12-31 370 2001-12-31 425 2002-12-31 414 2003-12-31 438 2004-12-31 380 2005-12-31 360 2006-12-31 399 2007-12-31 394 2008-12-31 347 2009-12-31 338 2010-12-31 306 2011-12-31 276 2012-12-31 257 2013-12-31 227 2014-12-31 244 2015-12-31 228 2016-12-31 289 2017-12-31 293 2018-12-31 336 2019-12-31 311 2020-12-31 361 2021-12-31 371 2022-12-31 384 2023-12-31 368