Year	current US$
1960	1900000
1961	28100000
1962	23800000
1963	33100000
1964	30900000
1965	34100000
1966	33433000
1967	44151000
1968	50815000
1969	55814000
1970	63574000
1971	77103000
1972	93332000
1973	111615000
1974	146250000
1975	196245000
1976	210704000
1977	267446000.00000003
1978	310692000
1979	319957000
1980	329884000
1981	541065000
1982	474241000
1983	316853408.6
1984	300571266.1
1985	339163460
1986	383012545.6
1987	346641341.5
1988	326533414.1
1989	207307164.8
1990	265156466.79999998
1991	241246340.8
1992	441877857.7
1993	345206887.1
1994	351758165.4
1995	637390407
1996	559193639.9
1997	602869663
1998	639520917.1999999
1999	843228572.3
2000	559933540
2001	622081053
2002	714814244
2003	885975412
2004	896689549
2005	887383167
2006	1004209772
2007	1631600844
2008	1714077102
2009	1549680525
2010	2127628235.0000002
2011	2069050960
2012	2318999665
2013	2958297679
2014	3654517563
2015	2475081596
2016	2630469449
2017	3060709794
2018	3278732943
2019	2905137230
2020	2458393633