Year	current US$
1960	332000000
1961	748000000
1962	723000000
1963	618000000
1964	497000000
1965	544499983.312562
1966	739990008.890629
1967	635959994.032979
1968	741639993.445948
1969	640000000
1970	661000000
1971	650000000
1972	556000000
1973	430000000
1974	311000000
1975	267000000
1976	270000000
1977	164000000
1978	217000000
1979	400000000
1980	545000000
1981	428000000
1982	890000000
1983	1023000000
1984	1037000000
1985	1143000000
1986	956000000
1987	1022000000
1988	813000000
1989	791000000
1990	673000000
1991	1165000000
1992	233000000
1993	1775000000
1994	1172000000
1995	1298000000
1996	1196000000
1997	947000000
1998	1307669995.44576
1999	2568129970.29349
2000	2209060021.18625
2001	2402599995.09342
2002	3490900040.3396797
2003	4650839932.99492
2004	5786769972.42682
2005	13314450042.508501
2006	7372149828.05029
2007	5834970084.8311205
2008	6238770042.47159
2009	6394890052.28318
2010	4883799955.27491
2011	5156140032.492579
2012	3469609993.82846
2013	4012889986.48897
2014	3561450026.7989902
2015	2818809960.10825
2016	3287599969.42058
2017	3465469981.80076
2018	3585080047.41184
2019	3093610032.5901103
2020	3605069985.37108
2021	3801749986.6616
2022	3325969965.362922