Year	current US$
1970	25251652.6523346
1971	27241648.2852419
1972	29911228.5193095
1973	32536921.4805066
1974	41510114.9625861
1975	45878302.8082748
1976	57427305.3973901
1977	72305291.753235
1978	84294390.9793844
1979	87161176.4219418
1980	99734592.7931594
1981	119315819.771623
1982	148398701.65857
1983	185607430.234684
1984	216425681.493665
1985	237703064.24099
1986	283765093.637429
1987	301963906.570712
1988	352367736.007835
1989	389321747.851736
1990	425038680.11337
1991	490442672.275861
1992	571938424.527559
1993	611595188.484916
1994	543783571.597337
1995	575850233.128528
1996	560448821.741425
1997	564427750.225577
1998	723310604.13268
1999	802524763.678544
2000	771158763.80791
2001	805965471.578588
2002	819219764.843628
2003	928821306.362832
2004	891917038.230129
2005	993085458.428135
2006	1034407322.69568
2007	1140558592.1817
2008	1153984983.25757
2009	1244820939.38816
2010	1204632126.97321
2011	1345064222.53329
2012	1384277421.23743
2013	1489892248.02908
2014	1598019473.20273
2015	1535365440.60813
2016	1615471074.61929
2017	1647888482.25558
2018	1722437380.81003
2019	1770523239.37039
2020	1385962093.88228
2021	1498589775.15025