Year	current US$
1960	33700000
1961	63030000
1962	69250000
1963	77780000
1964	92780000
1965	107480000
1966	90170000
1967	105550000
1968	91400000
1969	142200000
1970	289680000
1971	380877802.541532
1972	442525270.120542
1973	526067676.074634
1974	925219060.780669
1975	425494067.195095
1976	289345662.306521
1977	356779724.021281
1978	389705531.679181
1979	1520685929.71649
1980	1979845993.94478
1981	1199495116.05954
1982	1349649819.67828
1983	1365707234.46643
1984	1630517392.86056
1985	1842000000
1986	1407200000
1987	645800000
1988	511000000
1989	808400000
1990	1039800000
1991	2443000000
1992	2849027500.10313
1993	3407940887.55145
1994	6992447399.50044
1995	8221745935.95034
1996	10578313525.981
1997	10982227382.5072
1998	9565488028.27313
1999	8730482351.68977
2000	8373996763.57695
2001	8671849844.16551
2002	9339046525.05873
2003	9776803431.97911
2004	12176409334.9954
2005	13599425520.0395
2006	16733388472.0951
2007	26856502654.8166
2008	30271488826.0228
2009	32012670983.6579
2010	42647907007.0204
2011	47206301443.3495
2012	62300316441.7375
2013	64423229559.8001
2014	61185203177.3217
2015	60413121549.4408
2016	60523665893.2593
2017	62373896621.5187
2018	58904354236.5789
2019	66742589625.0168
2020	72853559862.8838
2021	76560945306.3152
2022	70307850583.4121
2023	69095470568.2952