Year	current US$
1975	3240955.42422485
1976	5191851.85189819
1977	5652962.9630127
1978	6757037.03707886
1979	8124074.0741272
1980	8287427.03002546
1981	7611783.64444343
1982	8211031.07454914
1983	8870469.55976597
1984	12380000
1985	12650000
1986	25110000
1987	30800000
1988	32650000
1989	38210000
1990	44589868.4042054
1991	48746647.3558483
1992	55461256.7547128
1993	60037821.2318872
1994	57790724.1282155
1995	63090887.4909324
1996	56140803.4142806
1997	60981753.4864643
1998	70614752.0453442
1999	74515079.3235162
2000	78828583.5046657
2001	88936538.4132027
2002	93892175.2611735
2003	106902191.800399
2004	132539594.875514
2005	116387878.787697
2006	134538725.293094
2007	153719597.544505
2008	142774402.813669
2009	174798934.462151
2010	206256181.499737
2011	213433689.006085
2012	231967199.010973
2013	192222634.629787
2014	257658514.613209
2015	317540361.620252
2016	305519500.768958
2017	321767417.204396
2018	285824309.747523
2019	260870367.109565
2020	231361279.000779
2021	433117473.472593
2022	389083414.445693
2023	424323643.897079