Year	current US$
1960	-9799804.0039199
1961	-4899902.00195994
1962	-9659806.80386388
1963	-11059778.8044239
1964	-2099958.00083998
1965	419991.600167997
1966	4199916.00167997
1967	7180336.9235018
1968	1920076.80307216
1969	6000240.00960038
1970	31441257.650306
1971	26116259.4776749
1972	39545908.1836327
1973	55291102.1603808
1974	89871611.9828816
1975	103959249.826349
1976	119496166.484118
1977	161701185.070329
1978	194737465.923907
1979	133431264.536663
1980	133234823.297623
1981	146431363.788674
1982	177925153.955471
1983	186244296.9016
1984	179071671.147587
1985	145773951.486243
1986	122293267.422492
1987	176438674.333318
1988	168312927.029243
1989	140242725.131364
1990	252056762.798197
1991	312903149.859094
1992	12326756.0291955
1993	-19058939.7656037
1994	-35621045.2818094
1995	-4580755.96877744
1996	74730561.4527879
1997	-16780591.3331144
1998	142325411.052145
1999	-11035798.7756337
2000	66835091.1429905
2001	64550382.0779999
2002	74250847.3161692
2003	77679657.2337526
2004	-523391.947110427
2005	-150291506.782684
2006	36851489.0066064
2007	587269002.760128
2008	349955998.568203
2009	794762474.064388
2010	748147356.543801
2011	415511096.984005
2012	-203026332.163819
2013	335051549.735694
2014	389103817.9243
2015	293717161.00974
2016	-95212290.8614836
2017	391579846.42719