Year	current US$
1970	18012003.9516479
1971	14328137.9407862
1972	14350294.4323086
1973	26639786.9201418
1974	31489834.809112
1975	73274712.5173427
1976	44647549.6567315
1977	154399911.698345
1978	157448281.348642
1979	66255029.7150269
1980	81343249.151465
1981	73549851.393951
1982	110905412.384631
1983	75942626.1869382
1984	67776187.3276413
1985	50997924.2954588
1986	89390619.3665876
1987	82231345.5993135
1988	89167741.4209751
1989	95619416.918556
1990	127402860.72244
1991	122356913.124503
1992	128961471.97414
1993	115628754.447824
1994	98345243.1828203
1995	116458148.192794
1996	136933711.834363
1997	133566930.075386
1998	134245751.363003
1999	151899559.207799
2000	138808393.363705
2001	137429249.889404
2002	143919656.012005
2003	134072370.926763
2004	92018448.7003408
2005	97828999.5513682
2006	107497859.034223
2007	122682597.652667
2008	50189783.7416275
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	115474882.258956
2019	260242937.000536
2020	434554464.159115
2021	448133718.446501