Year	current US$
1960	3360340000
1961	3692250000
1962	3859681000
1963	4663788000
1964	6099949000
1965	6234624000
1966	6954702000
1967	6863846000
1968	7720580000
1969	8883174636
1970	9702832455
1971	9115018545
1972	11612966000
1973	16330415000
1974	26859708182
1975	24186633727
1976	28463103182
1977	34107081182
1978	32819252182
1979	46346772925.1
1980	33715224112.6
1981	51531644125.87
1982	43671995512.64
1983	38860885063.61399
1984	42735893198.409996
1985	44405864975.10902
1986	37692595350.558
1987	39298082000.01699
1988	42598921948.852
1989	45637306110.63501
1990	53356360488.531006
1991	48397204499.774994
1992	55590173602.36399
1993	51271687232.03
1994	56122451100.02602
1995	66054270089.420975
1996	77921974512.349
1997	80145215327.422
1998	69531685589.36102
1999	69810284758.492
2000	112576097459
2001	109523360868
2002	117130956902
2003	135285607849
2004	164965661861
2005	203811377454
2006	225492134795
2007	270130961108
2008	350087612632
2009	250194638173
2010	350619021625
2011	454137406576
2012	423947169807
2013	420794959677
2014	412760968482
2015	305528962127
2016	265792348636
2017	303962443753
2018	352333539947
2019	338562618574
2020	295803832941