Year	current US$
1969	52880000
1970	64000000
1971	107660000
1972	138370000
1973	194440000
1974	270920000
1975	409400000
1976	832950000
1977	1225070000
1978	1183900000
1979	1425210000
1980	1439760000
1981	1517770000
1982	1950990000
1983	1459450000
1984	1164100000
1985	1140970000
1986	1100040000
1987	1135950000
1988	1269478022
1989	1330082418
1990	1694890110
1991	1720109890
1992	2020830769
1993	1890686813
1994	1945727473
1995	1929326624
1996	3402869479
1997	2871961188
1998	3408571429
1999	2499560440
2000	3235144099
2001	3732669307
2002	4050534734
2003	4867254649
2004	5958707791
2005	10059615653
2006	16438662616.000002
2007	23427926768
2008	27822548282
2009	23975518739
2010	22438256844
2011	21710141906
2012	24420944805
2013	25746942230
2014	29380096570
2015	31628332408
2016	32208923962
2017	29910300389
2018	31696011818
2019	29178062038
2020	25764102798