Year	current US$
1962	8900000
1963	9600000
1964	15700000
1965	18500000
1966	21900000
1967	31620000
1968	50730000
1969	53270000
1970	86690000
1971	265680000
1972	343310000
1973	529730000
1974	1443640000
1975	2508330000
1976	2992250000
1977	3260540000
1978	3057350000
1979	3784660000
1980	4827960000
1981	6130460000
1982	4512660000
1983	3968690000
1984	3401018001
1985	2633246000
1986	2701591000
1987	2728187000
1988	2146065000
1989	2785527000
1990	990320942.9
1991	863709254.5
1992	1056974922.0000001
1993	869774858.6999999
1994	581339515.8
1995	595908164.5999999
1996	581080811.1
1997	181377999
1998	542393947.9
1999	770691290.2
2000	556645871
2001	381022029
2002	396929447
2003	368318124
2004	404312333
2005	274676327
2006	538293487
2007	719283852
2008	742939306
2009	634174062
2010	674858494
2011	762876408
2012	882981290
2013	2433008787
2014	2528546992
2015	667034580
2016	554468568
2017	647235909
2018	1327104188
2019	1100201707
2020	930297215