Year	Billions of British Pounds
1960-01-01	5.516
1961-01-01	5.478
1962-01-01	5.575
1963-01-01	5.993
1964-01-01	6.794
1965-01-01	6.955
1966-01-01	7.254
1967-01-01	7.866
1968-01-01	9.400
1969-01-01	9.966
1970-01-01	11.142
1971-01-01	12.197
1972-01-01	13.773
1973-01-01	18.971
1974-01-01	27.165
1975-01-01	28.844
1976-01-01	36.721
1977-01-01	42.539
1978-01-01	45.541
1979-01-01	54.530
1980-01-01	57.909
1981-01-01	60.813
1982-01-01	68.268
1983-01-01	78.141
1984-01-01	93.382
1985-01-01	99.596
1986-01-01	101.866
1987-01-01	112.876
1988-01-01	126.275
1989-01-01	144.486
1990-01-01	150.338
1991-01-01	144.500
1992-01-01	154.236
1993-01-01	173.036
1994-01-01	188.585
1995-01-01	210.567
1996-01-01	230.888
1997-01-01	236.411
1998-01-01	242.863
1999-01-01	259.099
2000-01-01	292.094
2001-01-01	305.673
2002-01-01	313.937
2003-01-01	323.905
2004-01-01	341.008
2005-01-01	378.065
2006-01-01	426.071
2007-01-01	418.355
2008-01-01	461.418
2009-01-01	430.344
2010-01-01	482.191
2011-01-01	519.129
2012-01-01	530.338
2013-01-01	552.562
2014-01-01	549.967
2015-01-01	546.594
2016-01-01	587.848
2017-01-01	640.503