Year	current US$
1960	80535150000
1961	84948590000
1962	88869840000
1963	97000390000
1964	109406600000
1965	119323500000
1966	133095700000
1967	140566778000
1968	160874750000
1969	185930318000
1970	214785217000
1971	241044355000
1972	287070106000
1973	393851274000
1974	526142243000
1975	561087470000
1976	626766495000
1977	712049021000
1978	852887405000
1979	1050812565000
1980	1237676743000
1981	1236895696364
1982	1176565396498
1983	1164978817561
1984	1253034465493.3
1985	1296785738761
1986	1495363366691
1987	1767025026938
1988	2044759133368
1989	2193208182927.6
1990	2514066105479
1991	2594681922787
1992	2773376017793.4
1993	2740792994358.15
1994	3109834280182.25
1995	3696041466597.57
1996	3808710837643.4
1997	4112379530076.1
1998	4068405927238.5
1999	4216101883074.1
2000	4592907749445
2001	4428237984574
2002	4590502131968
2003	5307747669719
2004	6303785760111
2005	6886874565822
2006	7761775097075
2007	8859597369537
2008	9884710639297
2009	7691502996771
2010	9065181390986
2011	10575541546341
2012	10432147337022
2013	10664675276423
2014	10703774850115
2015	9524487936791
2016	9334968764743
2017	10238807970954
2018	11096396258203
2019	10740918323407
2020	9803777754652