Year	current US$
1960	129500000
1961	174300000
1962	153300000
1963	165300000
1964	179300000
1965	191300000
1966	186200000
1967	158700000
1968	176700000
1969	200310000
1970	232339000
1971	205696000
1972	214062000
1973	321496000
1974	382173000
1975	383889000
1976	545030000
1977	607527000
1978	676567000
1979	788859000
1980	1058969000
1981	1182613000
1982	1032281999.9999999
1983	1063219000
1984	937751000
1985	858553000
1986	1088036000
1987	1189101000
1988	1446325000
1989	1612610000
1990	1730347000
1991	1587806000
1992	1620144000
1993	1678406576
1994	1913759000
1995	2120637000.0000002
1996	2397079000
1997	2729551000
1998	2770041000
1999	2237379445
2000	2294988542
2001	2057577690
2002	1850737197
2003	2197235512
2004	2929914649
2005	3402584874
2006	3868730564
2007	4401988888
2008	5943600703
2009	5397155327
2010	6696911065
2011	7998561872
2012	8735371963
2013	9064303528
2014	9132071866
2015	7677301769
2016	7044517075
2017	8060307987
2018	7515635944
2019	7948638754
2020	6813745749