Year	current US$
1960	119920000
1961	155400000
1962	156200000
1963	169900000
1964	244500000
1965	235900000
1966	257500000
1967	269500000
1968	313500000
1969	334180000
1970	383810000
1971	393940000
1972	441310000
1973	710630000
1974	965720000
1975	1125040000
1976	1297090000
1977	1730730000
1978	2291070000
1979	2446500000
1980	2975410000
1981	2394460000
1982	2182070000
1983	1844750000
1984	1577034950
1985	1759503563
1986	2047489505
1987	2242331395
1988	2081544640
1989	2111044034
1990	2097580012
1991	2103330464.0000002
1992	2409557080
1993	2087938455
1994	1960569917
1995	3037715635
1996	2908835862
1997	2756123717
1998	3279391051
1999	3046881979
2000	2493152103
2001	2549400625
2002	2586845820
2003	3553950622
2004	4710697905
2005	5863561798
2006	5814913512
2007	6683335445
2008	7903374660
2009	7000638605
2010	7871817993
2011	6702404324
2012	9969731748
2013	12721279867
2014	11069566482
2015	10438668379
2016	8607918611
2017	9644069411
2018	11004191767
2019	10515641292
2020	11453989596