Year	current US$
1977	25760000.074282296
1980	58130000.51677227
1981	48510000.418871656
1982	43659999.99828642
1983	47489999.50662258
1984	51230000.91314316
1985	55330000.31486154
1986	39999999.325722456
1987	40399999.96684491
1988	51020000.269636475
1989	61010000.31828884
1990	56219999.570399545
1991	57140000.50909816
1992	54940000.0479072
1993	53550000.265240654
1994	78839999.09088019
1995	82610000.22105874
1996	72820000.40076678
1997	65890000.58546664
1998	64120000.13329087
1999	57160000.8048117
2000	44920000.04835426
2001	68470000.88170172
2002	92750000.21420424
2003	73200000.5617738
2004	65989999.92012975
2005	67809999.56466259
2006	70000000.32223764
2007	71289999.78862709
2008	77260000.19907951
2009	79860000.56192283
2010	84309999.89248817
2011	83120000.49836934
2012	87157101.68227087
2013	85026886.67178157
2014	79932708.3677053
2015	68976687.21526863
2016	52808258.83150102
2017	43036660.81279517
2018	48497259.99683141
2019	74812238.19404842
2020	86886259.48131086
2021	83200506.09111786
2022	90635020.22624014