Year	current US$
1960	362100000
1961	398800000
1962	333200000
1963	364200000
1964	340200000
1965	448000000
1966	351300000
1967	314400000
1968	306300000
1969	348524000
1970	410666000
1971	416667000
1972	290502000
1973	450283000
1974	818593000
1975	790693000
1976	838335000
1977	1205106000
1978	955555000
1979	894366000
1980	1132353000
1981	1261375000
1982	1011495000
1983	764295000
1984	568661000
1985	793573000
1986	783382689.5
1987	1103767546
1988	965587335.1999999
1989	1273188852
1990	1613936364
1991	511131000
1992	2139339000
1993	2075680359.9999998
1994	2071043532.0000002
1995	2566886757
1996	3237656816
1997	3353702577
1998	3421849063
1999	3251096875
2000	2900560544
2001	3153813468
2002	2708252283
2003	3210187223
2004	4073954002
2005	4878383136
2006	5328824599
2007	7278290048
2008	8536051307
2009	6464802572
2010	8052406891
2011	12602676328
2012	13578112652
2013	12787233476
2014	16786416803
2015	14687476654
2016	11361004450
2017	12718141819
2018	11880470786
2019	10439795490
2020	11393988946