Year	current US$
1970	1449999.9936670065
1971	1279999.9658018334
1972	1389999.9894201753
1973	1920000.0092387185
1974	4520000.081509351
1975	8489999.990910294
1976	2819999.9779462805
1977	8970000.008121135
1978	11079999.90321695
1979	14209999.905899175
1980	20900000.143796206
1981	35960000.09775162
1982	51460000.52616
1983	47959999.050945066
1984	43309999.27595256
1985	33100000.495091096
1986	25430000.02019106
1987	30349999.39240518
1988	37160000.24788085
1989	61619999.03433022
1990	64640000.66369777
1991	43769999.565556645
1992	59029999.56347043
1993	44370000.33445655
1994	61729999.85143541
1995	55630000.85391109
1996	53419999.625533804
1997	43879999.39732251
1998	32349999.699741602
1999	30560000.183060765
2000	32359999.507665634
2001	21040000.090375535
2002	24509999.824687824
2003	26229999.73967672
2004	29000000.122934557
2005	28769999.993965033
2006	34160000.13798476
2007	51629999.458789825
2008	54749999.366700634
2009	82110000.21547075
2010	123699999.77760014
2011	280690000.44837594
2012	276069998.99819493
2013	265060000.7083267
2014	125439999.03835353
2015	88549998.81424007
2016	65429999.90284443
2017	135399999.43040317
2018	61540000.353008464
2019	57330000.27202072
2020	48740000.94272199
2021	45470000.46074391
2022	50909999.77849426