Year	current US$
1970	7912572779.83157
1971	8460784600.2361
1972	10216990151.2609
1973	12379704245.9503
1974	13206641921.825
1975	15220765479.7917
1976	15395810043.944
1977	17429592821.7326
1978	14295562491.7611
1979	16722166809.6276
1980	20397801772.0973
1981	20969562418.401
1982	22235792141.5516
1983	24737674896.6545
1984	26509175170.7586
1985	28829266857.323
1986	30033409902.6268
1987	27131859309.9334
1988	28081570641.3783
1989	32698634385.4931
1990	35286228582.561
1991	38112155726.1067
1992	40045470152.7604
1993	46632666345.0015
1994	62548233939.994
1995	83109456156.7355
1996	100744891809.775
1997	117839627424.031
1998	135861284523.653
1999	149474614614.645
2000	166852821632.713
2001	183661485191.559
2002	201435486146.678
2003	231960537384.59
2004	279144925482.419
2005	333423092057.209
2006	419108377911.836
2007	561273317310.947
2008	779145611681.727
2009	926898629450.227
2010	1160132131282.75
2011	1555824969509.91
2012	1842346416645.29
2013	2174752292299.12
2014	2447811837380.87
2015	2634389206032.58
2016	2674549262320.46
2017	2908139309683.97
2018	3433527373777.74
2019	3621061278289.94
2020	3902865208761.18
2021	4661660943961.02