Year	US Dollars, Monthly Level
1960-01-01	51012914.352061900
1961-01-01	-106938000.499901000
1962-01-01	43686579.332465900
1963-01-01	13840468.219517300
1964-01-01	103400059.762353000
1965-01-01	-47807177.536986700
1966-01-01	-23930182.122589600
1967-01-01	30448271.350409500
1968-01-01	120473063.339325010
1969-01-01	220749730.480892000
1970-01-01	-16629871.481287198
1971-01-01	23307321.017206000
1972-01-01	270921595.243972000
1973-01-01	426637161.499183000
1974-01-01	-1236983863.365330000
1975-01-01	-972600912.908543000
1976-01-01	-455460376.590994950
1977-01-01	-171195625.166982000
1978-01-01	276106539.121187000
1979-01-01	181081489.951170000
1980-01-01	-41792979.840286200
1981-01-01	-141153172.233126000
1982-01-01	-168862251.809932000
1983-01-01	66470043.195448590
1984-01-01	-730233700.941980000
1985-01-01	-234245070.000196000
1986-01-01	-173888229.372766000
1987-01-01	-60234900.577069000
1988-01-01	1473996980.394209900
1989-01-01	33451551.388405000
1990-01-01	-49465524.715367400
1991-01-01	1260669743.304640000
1992-01-01	583858113.608491100
1993-01-01	902908558.015124100
1994-01-01	318891121.358153000
1995-01-01	-303814832.176767050
1996-01-01	-413445367.992779970
1997-01-01	-332552235.394317000
1998-01-01	-458115336.855233970
1999-01-01	-1798352677.273970000
2000-01-01	-604167094.469147000
2001-01-01	438760483.468480000
2002-01-01	-602314603.242441000
2003-01-01	-1925716426.662110000
2004-01-01	-2797191565.061370000
2005-01-01	-4476278688.343940000
2006-01-01	-3919856477.628940000
2007-01-01	-3795078817.032409700
2008-01-01	-3714551599.658330000
2009-01-01	-430622331.802726030
2010-01-01	828067034.840418000
2011-01-01	592208330.452580000
2012-01-01	-879424597.593856100
2013-01-01	-170437537.401339980
2014-01-01	-854182341.148294100
2015-01-01	-2330145812.308780000
2016-01-01	-2151023030.671059600
2017-01-01	-1974561035.056540000