Year	current US$
1960	73900000
1961	75200000
1962	80000000
1963	89900000
1964	104900000
1965	115600000
1966	110600000
1967	101000000
1968	105100000
1969	119335000
1970	122729000
1971	125624000
1972	166785000
1973	240125000
1974	266712000
1975	239994000
1976	280883000
1977	332827000
1978	306099000
1979	417899000
1980	424732000
1981	392303000
1982	406016000
1983	403923000
1984	417418000
1985	337766000
1986	454898550.7
1987	370695000
1988	421350000
1989	457828000
1990	294197000
1991	189154797.1
1992	186761819.8
1993	201740000
1994	386009881.09999996
1995	429698403.2
1996	440068013.59999996
1997	591879531.1999999
1998	604716052.9
1999	474731314.2
2000	471447877
2001	315795618
2002	449297844
2003	497907497
2004	601127614
2005	825926856
2006	863001200
2007	1108235221
2008	1381152602
2009	909103337
2010	1299269116
2011	1707543861
2012	2001013177
2013	2659450923
2014	3067362896
2015	3076992872
2016	2750504820
2017	2835913254
2018	2753125365
2019	3165830503
2020	3314877187