Year	current US$
1970	5899999.875575298
1971	4039999.8910725196
1972	4129999.943077566
1973	17430000.320076942
1974	10120000.153779991
1975	10789999.835193163
1976	14539999.783039058
1977	18650000.184774406
1978	21569999.903440475
1979	20440000.17642976
1980	24560000.30040744
1981	32710000.097751636
1982	24990000.36716458
1983	17939999.610185616
1984	19409999.966621365
1985	24369999.974966038
1986	27500000.178813916
1987	36439999.66979029
1988	39510000.288486466
1989	41090000.584721595
1990	67680000.18596649
1991	72259999.92340796
1992	94700000.40531152
1993	69039999.87244605
1994	59209999.93756419
1995	64890000.87976452
1996	42820001.45316123
1997	37419998.95498155
1998	50960000.74036421
1999	18229999.504983418
2000	18080000.48063696
2001	59350000.016391285
2002	36949999.55035749
2003	38019999.99396503
2004	53139999.44180256
2005	38579999.148845635
2006	39500000.424683124
2007	28790000.07733703
2008	36519999.47428702
2009	35890001.192688905
2010	30079999.50647356
2011	25439999.68469141
2012	16839999.916032005
2013	17100000.59008602
2014	5829999.808222053
2015	4989999.96483325
2016	112400003.5375353
2017	7269999.876618377
2018	13310000.419616695
2019	7669999.957084655
2020	2620000.079274181
2021	5770000.271499166
2022	3039999.991655346