Year	current US$
1960	400000
1961	600000
1962	27100000
1963	28700000
1964	41300000
1965	44900000
1966	47100000
1967	44900000
1968	46200000
1969	59958000
1970	67037000.00000001
1971	72598000
1972	84892000
1973	100969000
1974	118955000
1975	173898000
1976	185843000
1977	283773000
1978	447128000
1979	518082000
1980	550684000
1981	433333000
1982	390503000
1983	306376541
1984	299240431.7
1985	288041757.4
1986	312308889.9
1987	420685859.3
1988	487373000
1989	471868000
1990	581046000
1991	445407000
1992	955720713.7
1993	635728086.2
1994	706798866.6999999
1995	384285312.8
1996	403796478.70000005
1997	373450618.29999995
1998	429585211.8
1999	341672105.90000004
2000	322364505
2001	351998529
2002	394000804
2003	563419071
2004	556626494
2005	595975756
2006	712625516
2007	783061931
2008	952252862
2009	1335873368
2010	1349814811
2011	1856693932
2012	1868169621
2013	2476278151
2014	2035036038
2015	1878983297
2016	1858089848
2017	1635374713
2018	1908928658
2019	1845537021
2020	1664108370