Year	current US$
1970	20311600
1971	20764605.1455
1972	22792569.3589597
1973	25849213.2869597
1974	30008013.947
1975	32182933.665
1976	37914139.5604597
1977	44813998.6
1978	90112262.796
1979	99043177.3127
1980	110349641.334
1981	120416241.2366
1982	153976133.9728
1983	170709219.122456
1984	187397521.936339
1985	208530949.2125
1986	251520132.114
1987	279791998.3505
1988	248607806.888258
1989	212264072.005173
1990	187845427.078892
1991	174669066.902402
1992	170023379.285796
1993	173391201.237472
1994	154808119.232233
1995	193168857.643378
1996	175744415.57691
1997	195867871.093083
1998	218315009.384983
1999	233304660.829661
2000	272804817.374304
2001	303323974.989589
2002	324208148.547019
2003	351836807.361082
2004	392076311.498422
2005	450616943.864438
2006	522462091.013533
2007	623957989.619113
2008	727909054.389258
2009	798960157.204163
2010	872365155.024403
2011	999221716.633919
2012	1059728461.34913
2013	1088507282.66958
2014	1150084016.44812
2015	1237483386.34416
2016	1278495339.61025
2017	1374950082.81141
2018	1403568730.3108
2019	1462376314.33992
2020	1403389523.99936
2021	1656676602.94712