Year	US Dollars
1960	-2014859.58947
1961	-11837300.08815
1962	-3903790.4546
1963	3148218.10855
1964	8185367.08223
1965	-11585442.63947
1966	-6794162.05335
1967	-4351610.09574
1968	-7443032.1768
1969	-7891125.34309
1970	-7107646.45191
1971	-19291476.67485
1972	-29447406.68929
1973	-57416267.94258
1974	-29170804.36941
1975	-4380094.90206
1976	-32861869.22134
1977	-19839001.52605
1978	-36608526.21634
1979	-55402895.776
1980	-59413325.18337
1981	-178095249.23941
1982	-76469433.71943
1983	-60963520.15733
1984	-12562349.89839
1985	-4334171.28988
1986	28246094.0948
1987	38588310.95747
1988	34957771.09697
1989	27371401.60453
1990	-64352758.45769
1991	-44185416.10192
1992	-45908183.63273
1993	-115644052.40628
1994	-55324089.88457
1995	8746355.68513
1996	85227677.61705
1997	54443443.92879
1998	41423394.40306
1999	-7717303.00569
2000	-85972000.37583
2001	-133664236.14161
2002	-44949471.85514
2003	-194060554.91086
2004	-452798615.11829
2005	-360510526.31579
2006	-558835258.78004
2007	-427481090.48004
2008	-579168915.10322
2009	-293875645.54891
2010	-190168378.25158
2011	-88891367.38791
2012	-146935582.99346
2013	-436515694.58021
2014	-483310374.05955
2015	-246710526.31579
2016	-1175920179.50064