Year	constant 2021 US$
1961	10270000.4577637
1966	24959999.084472697
1967	5489999.771118159
1969	870000.004768372
1971	1330000.04291534
1973	50000.0007450581
1974	45220001.220703095
1975	79209999.0844727
1976	89529998.7792969
1977	134300003.05175802
1978	152339996.33789098
1979	137039993.28613302
1980	137800003.05175802
1981	165210006.71386698
1982	171589996.33789098
1983	175789993.28613302
1984	162059997.55859402
1985	159850006.10351598
1986	155679992.67578098
1987	213770004.272461
1988	180850006.10351598
1989	220529998.779297
1990	205380004.882813
1991	177190002.44140598
1992	158139999.38964802
1993	145380004.882813
1994	283720001.220703
1995	155309997.55859402
1996	251729995.727539
1997	186149993.89648402
1998	142800003.05175802
1999	83010002.1362305
2000	141080001.831055
2001	108019996.64306599
2002	98190002.44140631
2003	198020004.272461
2004	96300003.0517578
2005	80889999.3896484
2006	103019996.64306599
2007	115019996.64306599
2008	115199996.94824201
2009	134529998.779297
2010	132940002.441406
2011	116989997.86377
2012	83120002.746582
2013	107239997.86377
2014	110959999.084473
2015	109279998.77929701
2016	223110000.61035198
2017	126370002.746582
2018	164149993.89648402
2019	122959999.084473
2020	156080001.831055
2021	169100006.10351598
2022	156160003.66210902