Year	current US$
1970	39298177.4597478
1971	42863309.9089461
1972	36689820.3592814
1973	76421305.8491441
1974	85371838.888474
1975	80640128.3526522
1976	90575673.3097884
1977	110884761.182714
1978	132520101.565806
1979	154576295.167182
1980	171548665.971084
1981	166348439.821694
1982	155200947.867299
1983	166966630.785791
1984	170534283.21834
1985	161094278.616415
1986	177592958.61643
1987	207007592.355986
1988	242546419.098143
1989	235466115.510014
1990	213646724.97725
1991	252784978.991597
1992	274566050.383579
1993	313321609.157808
1994	351727548.059701
1995	301527681.409969
1996	323907239.2261
1997	318288440.555052
1998	243135239.353178
1999	220231205.198897
2000	227892053.493924
2001	195377805.470764
2002	191381532.683103
2003	215951447.646115
2004	245568626.967129
2005	312404611.315281
2006	519614514.672686
2007	608923250.160186
2008	760848559.090402
2009	742717482.632208
2010	909587695.399549
2011	1122835931.96963
2012	1393666533.5477
2013	1348371552.818
2014	1573818235.96327
2015	1471623937.03944
2016	1416514885.89212
2017	1538301923.57626
2018	1620970460.87749
2019	1635801427.83764
2020	1626880123.43931
2021	1759476909.54173