Year	current US$
1960	265999893.60004258
1961	261799895.2800419
1962	271599891.36004347
1963	281399887.44004506
1964	349999860.000056
1965	358399856.6400574
1966	393399842.6400629
1967	422531127.15011036
1968	455999635.2002918
1969	517679585.8563313
1970	525600210.2400841
1971	630401944.2796727
1972	770072707.3723712
1973	783909574.4680852
1974	1090321090.3210905
1975	1304711304.7113047
1976	1123871123.871124
1977	922350922.3509223
1978	987222432.1390716
1979	1227859821.461963
1980	1367560653.8604035
1981	1662493965.4882061
1982	1602036577.5617204
1983	1557278452.6789691
1984	1462360264.4209552
1985	1379728375.5966926
1986	1263966992.0568955
1987	1520814038.8326828
1988	1829425309.4713109
1989	2308098659.5857496
1990	2382299630.0820227
1991	2110239656.648818
1992	2235110185.8425193
1993	2108459209.0522294
1994	3045100768.3537292
1995	3708143137.7625885
1996	3879895337.1158137
1997	4065249732.4701996
1998	4045800273.5978117
1999	4016518286.505798
2000	4567635283.361676
2001	4529651873.794059
2002	4770556772.39534
2003	4860075377.452721
2004	5267839051.45987
2005	6208262059.932999
2006	7231367529.420011
2007	7873767551.879648
2008	9820605948.883837
2009	6351790085.616649
2010	6555427346.525155
2011	7721134727.097917
2012	7678417130.440471
2013	7514909452.82183
2014	7434187503.606295
2015	6554700892.346633
2016	6284261849.482411
2017	7236574956.834527
2018	8087838934.886988
2019	8243796773.552099