Year	current US$
1970	3610000.0273436313
1971	4399999.991059303
1972	3490000.054240226
1973	3659999.966621399
1974	10349999.923259025
1975	12320000.07107855
1976	7760000.025853518
1977	11929999.947547916
1978	14390000.298619267
1979	16880000.09208918
1980	13190000.22485853
1981	9960000.054910775
1982	22970000.36947432
1983	41309999.212622605
1984	25489999.655634183
1985	17489999.8754263
1986	17020000.204443928
1987	17100000.107660882
1988	16050000.205636034
1989	26779999.67336656
1990	23190000.087022785
1991	50170000.01668932
1992	52580000.400543176
1993	76839998.4240532
1994	48980000.49591063
1995	49399999.320507035
1996	36189999.878406525
1997	22000000.17881392
1998	22309999.64475631
1999	15589999.854564674
2000	17079999.86410141
2001	18129999.816417687
2002	15050000.07152557
2003	18419999.89748002
2004	16230000.019073479
2005	19099999.964237202
2006	21589999.735355366
2007	34830000.16212462
2008	22869999.70674517
2009	24070000.35047531
2010	21529999.911785137
2011	23009999.99046327
2012	25032021.49970457
2013	46735977.56028175
2014	24355408.489704125
2015	37627575.27828216
2016	27707500.159740455
2017	30365179.538726803
2018	37387412.25004196
2019	39223999.67908859
2020	40832000.61321258
2021	33793000.221252434
2022	40692999.482154824