Year	current US$
1960	277627143.55519164
1961	232423861.37933066
1962	194670762.90543172
1963	236081600.64670977
1964	311639057.6486137
1965	327059661.5778958
1966	269870267.85830414
1967	242662235.2106659
1968	89510875.70946483
1969	256699959.28049535
1970	109131273.88018861
1971	104337977.89141
1972	107502493.69447966
1973	-116917003.24455415
1974	659789038.9496568
1975	159345326.41135103
1976	193869863.66469538
1977	519027614.2272148
1978	558001282.6143723
1979	372551452.1455777
1980	1165710375.2697542
1981	1477432690.2586339
1982	304461837.2200284
1983	865833734.3587579
1984	472169169.0319663
1985	371251829.62639105
1986	653478015.9696494
1987	504739770.34999764
1988	719113455.3451103
1989	899319774.1718283
1990	878606852.6824349
1991	635619809.9049524
1992	914447223.6118058
1993	513984992.496248
1994	786941470.7353677
1995	608864432.216108
1996	450124062.03101546
1997	912989494.7473736
1998	1426937468.7343671
1999	583665832.9164582
2000	378163081.54077035
2001	738745000
2002	794652000
2003	104201000
2004	169062000
2005	470951000
2006	704001000
2007	922822000
2008	2524815000
2009	1822130000
2010	2574242000
2011	2046602000
2012	766551000
2013	925150000
2014	1255213000
2015	140887000
2016	-457867000
2017	1064690000
2018	1668092000
2019	424255000
2020	-393556000
2021	2038816000
2022	2524339000
2023	2134013000