Year	current US$
1975	53300598.14
1976	99174268.72
1977	1053856391.86
1978	1214555717.48
1979	1146284696.66
1980	1471001607.65
1981	1919396723.17
1982	1941263632.19
1983	2443259281.18
1984	1681610925.32
1985	1263758153.9399998
1986	865859404.602
1987	766637154.599
1988	731549594.8610001
1989	657981575.0139999
1990	697652298.0805432
1991	673224825.5872214
1992	837618924.0187793
1993	669275027.3166585
1994	734083816.1420602
1995	683095747.33321
1996	636291922.8513777
1997	859738472.3145618
1998	631098878.7835026
1999	545223183.8039343
2000	833725495.8335866
2001	1058707569.2884296
2002	3664310490.2564054
2003	5237133791.350681
2004	5704779917.529529
2005	5652958600.206532
2006	6164298012.08964
2007	5094184241.059665
2008	6731797885.614652
2009	8574404920.795595
2010	7959487933.46153
2011	6462847735.564946
2012	8719989655.01004
2013	10030085110.826164
2014	7830674319.217365
2015	6814681802.776385
2016	6772315843.808327
2017	6855721264.974741
2018	7678859992.343547
2019	7405656168.523381
2020	5449535210.19169
2021	4957236243.207506
2022	3532053059.701014