Year	current US$
1971	270000.010728836
1972	239999.994635582
1973	29999.999329447703
1975	29999.999329447703
1977	9999.99977648258
1978	7929999.82833862
1979	8699999.80926514
1980	21059999.4659424
1981	21450000.762939498
1982	7969999.79019165
1983	12340000.1525879
1984	13859999.6566772
1985	8199999.80926514
1986	12890000.3433228
1987	13060000.4196167
1988	12289999.961853001
1989	30809999.4659424
1990	32700000.7629395
1991	55139999.3896484
1992	53630001.0681152
1993	38830001.8310547
1994	47500000
1995	65050003.0517578
1996	61479999.5422363
1997	38060001.373291
1998	49810001.373291
1999	41689998.626709
2000	15569999.6948242
2001	14329999.923706101
2002	42159999.8474121
2003	46020000.4577637
2004	37569999.6948242
2005	15220000.2670288
2006	21340000.1525879
2007	30899999.6185303
2008	36560001.373291
2009	41189998.626709
2010	72360000.6103516
2011	36310001.373291
2012	30479999.5422363
2013	41770000.4577637
2014	53470001.220703095
2015	87010002.1362305
2016	77480003.3569336
2017	82180000.3051758
2018	105290000.915527
2019	81489997.8637695
2020	48080001.8310547
2021	62830001.8310547
2022	77870002.746582