Year	current US$
1973	29999.999329447703
1979	489999.98532235605
1980	1109999.9863654373
1981	6400000.162422652
1982	8399999.827146532
1983	5049999.879673114
1984	8759999.834001064
1985	7339999.843388795
1986	12179999.954998497
1987	39109999.962151065
1988	31529999.218881138
1989	42790000.69573517
1990	51599999.74444513
1991	38550000.02495946
1992	40699999.96386464
1993	29299999.829381682
1994	20050000.33974647
1995	24049999.45871528
1996	24859999.8895079
1997	20440000.075846955
1998	20160000.273957893
1999	15420000.134035937
2000	20280000.18559397
2001	15719999.998807913
2002	17730000.242590893
2003	19149999.96498225
2004	26829999.554902352
2005	32299999.66919425
2006	22999999.659135945
2007	27849998.988211196
2008	23849999.951198667
2009	28210000.52429738
2010	78940002.36690047
2011	21800000.490620706
2012	14220000.442117454
2013	5950000.111013657
2014	5120000.002905727
2015	5010000.07800758
2016	6710000.082850461
2017	6390000.049024824
2018	6079999.96095896
2019	5220000.091940172
2020	4899999.912828209
2021	7070000.10088087
2022	7369999.831542372