Year	current US$
1960	38800000
1961	60400000
1962	60200000
1963	83000000
1964	78100000
1965	65800000
1966	73200000
1968	66300000
1969	65024000
1970	70934000
1971	67434000
1972	104726000
1973	131398000
1974	310145000
1975	295237000
1976	261824000
1977	306351000
1978	314555000
1979	371110000
1980	429136000
1981	317299000
1982	358652000
1983	358514000
1984	365891000
1985	425266000
1986	646134000
1987	860742000
1988	980746368.9
1989	966375441.8
1990	1179313623
1991	1171328830
1992	1271652964
1993	1275383506
1994	1314672492
1995	1510728264
1996	1766931257
1997	1595323911
1998	1704132893
1999	1554840052
2000	1486320829
2001	1522553987
2002	1741331028
2003	1809317593
2004	1916619070
2005	2003358170
2006	2111336239.0000002
2007	2049299176
2008	2033499017
2009	1713572620
2010	1955628576
2011	2171791460
2012	2234738171
2013	2273960744
2014	2574394477
2015	2403233385
2016	2193217701
2017	2085130044
2018	2001234779
2019	1887981908
2020	1671141286