Year	current US$
1960	71800000
1961	79500000
1962	87200000
1963	90600000
1964	102700000
1965	138700000
1966	157400000
1967	170600000
1968	196700000
1969	186900000
1970	201800000
1971	217000000
1972	234998942.50475875
1973	293999853.0000735
1974	332500000
1975	345000000
1976	454500000
1977	581500050
1978	960859350.8000001
1979	1168036044.6499999
1980	1315331102.75
1981	1227917680.4
1982	1066168434.4
1983	1108154408.8999999
1984	1174230696.65
1985	1257514350.95
1986	1393796694.4
1987	1312577924.1
1988	1436852036.609442
1989	1520893864.275862
1990	1561384393.2392995
1991	1573527394.8125715
1992	1651611360.7013588
1993	1811810868.4642656
1994	2066441596.8984876
1995	2590041814.3899894
1996	2855718826.0135136
1997	3270298692.015209
1998	3679525531.757755
1999	3395137944.250871
2000	3878785428.5112658
2001	3931297278.350049
2002	4143703818.5300555
2003	4452150158.029175
2004	5181709224.054729
2005	5757207467.876273
2006	6119752690.735132
2007	6614386798.693842
2008	7124837294.256518
2009	5766473847.7171335
2010	7247910834.025753
2011	9077877620.202883
2012	9431552769.55223
2013	8869045890.691847
2014	9396732039.659681
2015	9475891625.380068
2016	9276480535.29014
2017	9970301123.800638
2018	9977241928.201668
2019	10007373348.52967
2020	8377646120.734211
2021	11079128213.316965
2022	13336955013.327276
2023	12731826450.48114