Year	current US$
1970	54762180.974478
1971	58390918.4423219
1972	60010273.830156
1973	64141634.6153845
1974	74490569.105691
1975	83289970.9310113
1976	92937248.0041652
1977	109994604.795663
1978	129348671.0013
1979	142122614.61503
1980	147995870.620581
1981	142256378.219653
1982	137614486.697949
1983	140776797.246917
1984	146067317.619796
1985	151379513.553953
1986	144920348.309839
1987	148337404.403108
1988	160897092.517007
1989	167880334.384029
1990	227079116.081497
1991	234019925.199492
1992	264103256.443036
1993	277938039.493939
1994	328582888.401593
1995	364465310.209094
1996	419367875.084544
1997	437573006.77706
1998	497926109.60125
1999	567815606.222041
2000	626853746.57906
2001	726664629.996396
2002	767294459.44625
2003	834421033.408192
2004	937393623.029704
2005	978605185.392253
2006	1106346262.18243
2007	1264099876.17901
2008	1478920244.26866
2009	1560835993.39192
2010	1538050274.14227
2011	1502287997.54648
2012	1805019906.98681
2013	2060047270.25256
2014	2142369793.93374
2015	2322366808.57859
2016	2442355249.89751
2017	2681649320.43261
2018	3064195140.4988
2019	3187915894.89825
2020	3057380421.12907
2021	3745822889.7397