Year	current US$
1970	2600000.053644184
1971	2579999.9628216056
1972	2629999.985918402
1973	4499999.936670065
1974	6010000.076144927
1975	8599999.967962502
1976	14599999.878555544
1977	15659999.597817663
1978	25300000.13858079
1979	29009999.29942188
1980	54979999.20137221
1981	32370000.40896237
1982	33009999.426081777
1983	44609999.98450281
1984	46619999.92281198
1985	30320000.19960105
1986	70309998.73019755
1987	54489999.62583182
1988	90580000.25153157
1989	98340000.34071498
1990	92769999.63819988
1991	81139999.6057152
1992	102689999.2190301
1993	127650001.94869931
1994	104269996.8423694
1995	117640000.8536875
1996	127100001.42268835
1997	104659999.18989833
1998	140439999.9063462
1999	163919997.56917354
2000	135159999.58291662
2001	143239999.9015033
2002	139130001.00292265
2003	156540000.3902614
2004	173209997.8588522
2005	252790003.1358002
2006	355209999.129176
2007	467489999.33898425
2008	463579996.2691962
2009	467370003.0520557
2010	474850002.7079135
2011	488999999.7764825
2012	454020006.26176584
2013	494919998.1372802
2014	529959999.0956485
2015	399349999.51720214
2016	365049998.72297037
2017	443079997.39050853
2018	424670002.222061
2019	578759999.9904635
2020	458730002.63981503
2021	655120007.0511552
2022	563199997.7771189