Year	current US$
1960	249600000
1961	243300000
1962	252700000
1963	268300000
1964	212500000
1965	246700000
1966	314800000
1967	298900000
1968	355658000
1969	361568000
1970	443495000
1971	569490000
1972	539717000
1973	616406000
1974	1026319999.9999999
1975	938601000
1976	972859000
1977	1289105000
1978	1711785000
1979	1659749000
1980	2588343000
1981	2045554000
1982	1602986000
1983	1379110000
1984	1500702000
1985	1436073118
1986	1613177122
1987	1739195691
1988	1988741823
1989	2147672915
1990	2048284999.9999998
1991	2178172000
1992	1883186636
1993	1906153646
1994	2142478658.9999998
1995	3249143347
1996	2750597762
1997	3246509899
1998	3301775966
1999	3100429272
2000	3252699359
2001	3664541992
2002	3260067636
2003	3702022565
2004	958336341
2005	5892053150
2006	7185631392
2007	8920021965
2008	11619921020
2009	9869716846
2010	11476958365
2011	14556795825
2012	16027413656
2013	16098863370
2014	18050864337
2015	16192636293
2016	14101181671
2017	16681481187.000002
2018	17425820766
2019	17348574773
2020	15526525143