Year	current US$
1975	2388000000
1976	2486000000
1977	2674000000
1978	2950000000
1979	3356000000
1980	4442000000
1981	4630000000
1982	4872000000
1983	3734000000
1984	3279000000
1985	3413000000
1986	4032000000
1987	3665000000
1988	4405000000
1989	5092000000
1990	6733000000
1991	6381000000
1992	6609000000
1993	9156000000
1994	9836000000
1995	13161000000
1996	12203000000
1997	16949148910.470001
1998	17242834006.1
1999	13411786434.85
2000	16091265613.2
2001	16057090717.2821
2002	13781389606.8444
2003	14664990689.5456
2004	16854119961.7971
2005	22862838561.7076
2006	27488858359.3356
2007	35631785596.4595
2008	46768084847.06915
2009	44769595652.27
2010	64772456795.31
2011	77627081851.52
2012	83591059803.31
2013	89253487246.63
2014	94393900363.24
2015	77510946485.11
2016	67413192087.189995
2017	72849794290.81999
2018	71129358355.54
2019	69497168209.54999
2020	50423926613.4
2021	56852850264.32
2022	77998945222.31999
2023	80530307353.53