Year	current USD
1973	9365839.70830056
1974	7786746.398360911
1975	9319735.1894778
1976	10297663.2859957
1977	16062942.5517876
1978	14393007.3227777
1979	19633017.1517821
1980	23552267.5593367
1981	28682783.331402
1982	28175370.7285622
1983	28024671.7013255
1984	25460676.6234673
1985	27250728.4310336
1986	34889469.1115173
1987	36093359.4762687
1988	36626347.1628316
1989	41622478.1344745
1990	95132735.4335092
1991	105333802.051708
1992	88570170.0027625
1993	89436136.3589093
1994	40510575.3923129
1995	56449336.7202935
1996	73658822.7625318
1997	77272576.52638209
1998	87091837.061419
1999	80852363.5840954
2000	61329857.1193956
2001	56885903.1314335
2002	51118614.1175728
2003	45196268.982898
2004	41215761.0455642
2005	44996351.889398605
2006	54557648.039730996
2007	55580440.8040881
2008	67660359.6239547
2009	75278486.0541411
2010	74514417.2864531
2011	75383928.55655521
2012	79793910.0920567
2013	82480715.5803265
2014	90937793.21668519
2015	103563214.70551
2016	107278618.68518901
2017	115716812.449004
2018	118959174.046815
2019	124073352.626892
2020	147873731.88727802
2021	167837803.023925
2022	177192546.99547198