Year	current US$
1966	6469999.79019165
1967	9750000
1968	9710000.03814697
1969	10520000.4577637
1970	11829999.923706101
1971	10649999.6185303
1972	13350000.3814697
1973	19479999.5422363
1974	29059999.4659424
1975	34400001.5258789
1976	28129999.1607666
1977	46229999.5422363
1978	104400001.52587901
1979	23180000.3051758
1980	73040000.9155273
1981	64510002.1362305
1982	58819999.6948242
1983	65430000.305175796
1984	102089996.337891
1985	81389999.3896484
1986	114930000.30517599
1987	105300003.05175799
1988	92599998.4741211
1989	75019996.6430664
1990	207009994.506836
1991	107160003.662109
1992	112190002.441406
1993	134429992.67578098
1994	128570007.324219
1995	105559997.558594
1996	97080001.8310547
1997	85650001.5258789
1998	80980003.3569336
1999	75150001.5258789
2000	72239997.8637695
2001	59400001.5258789
2002	74099998.4741211
2003	79260002.1362305
2004	64330001.8310547
2005	74169998.1689453
2006	115379997.253418
2007	101989997.86377
2008	132740005.493164
2009	156860000.61035198
2010	132029998.779297
2011	141399993.89648402
2012	148460006.71386698
2013	149250000
2014	166110000.61035198
2015	173389999.38964802
2016	185350006.10351598
2017	142610000.61035198
2018	179220001.220703
2019	262480010.986328
2020	259320007.324219
2021	175940002.44140598
2022	59169998.1689453