Year	Billions of British Pounds
1960-01-01	26.476
1961-01-01	28.142
1962-01-01	29.460
1963-01-01	31.324
1964-01-01	34.237
1965-01-01	37.036
1966-01-01	39.573
1967-01-01	41.901
1968-01-01	46.008
1969-01-01	49.909
1970-01-01	56.177
1971-01-01	62.948
1972-01-01	70.663
1973-01-01	81.895
1974-01-01	92.743
1975-01-01	115.176
1976-01-01	136.949
1977-01-01	159.701
1978-01-01	185.968
1979-01-01	220.845
1980-01-01	259.962
1981-01-01	289.899
1982-01-01	319.210
1983-01-01	351.109
1984-01-01	377.577
1985-01-01	414.329
1986-01-01	446.413
1987-01-01	495.534
1988-01-01	554.896
1989-01-01	613.381
1990-01-01	667.435
1991-01-01	703.728
1992-01-01	727.965
1993-01-01	766.408
1994-01-01	806.420
1995-01-01	846.536
1996-01-01	903.432
1997-01-01	948.953
1998-01-01	991.238
1999-01-01	1031.158
2000-01-01	1089.341
2001-01-01	1129.443
2002-01-01	1182.956
2003-01-01	1251.847
2004-01-01	1312.854
2005-01-01	1388.753
2006-01-01	1465.902
2007-01-01	1541.442
2008-01-01	1579.796
2009-01-01	1537.213
2010-01-01	1587.466
2011-01-01	1644.546
2012-01-01	1694.417
2013-01-01	1761.347
2014-01-01	1844.295
2015-01-01	1895.839
2016-01-01	1969.524
2017-01-01	2044.471