Year	current US$
1970	143402793.205868
1971	162978380.707088
1972	221764746.484672
1973	301190011.94455
1974	252033652.834716
1975	498870443.956045
1976	650787996.102634
1977	1660889285.70128
1978	2871318301.17481
1979	4777637313.10071
1980	6920802205.46728
1981	8781144584.92953
1982	11281711333.9797
1983	12781851381.1757
1984	13856756373.4004
1985	14947577409.37
1986	12002251050.3265
1987	12222663432.4563
1988	11418041742.7987
1989	12364722502.8374
1990	13742684154.8176
1991	15585844735.4553
1992	12459824586.8388
1993	13827124637.1774
1994	15593614045.7304
1995	16678475457.0882
1996	18164371742.6634
1997	18198818551.0053
1998	18014073504.5239
1999	17409541557.9294
2000	17326497147.0408
2001	18942592049.69
2002	17585117909.7003
2003	20370755417.4681
2004	26509799198.5107
2005	28568545532.9776
2006	32136100376.1697
2007	36408574030.8167
2008	43420455966.7713
2009	40848767203.6889
2010	46237080135.6134
2011	50023436051.5894
2012	55927337974.1809
2013	66276535662.9132
2014	70856814059.1044
2015	85907586171.4414
2016	77553925520.772
2017	77548951000.7644
2018	77225418256.4956
2019	81166690196.0189
2020	86208979445.9739
2021	105110086054.708