Year	US Dollars, Monthly Level
1990-01-01	-32562138759.052900
1991-01-01	-73348426667.998100
1992-01-01	-50241170660.166000
1993-01-01	18719578860.213100
1994-01-01	25562888446.897102
1995-01-01	49973894169.135100
1996-01-01	65557110864.088104
1997-01-01	67545615153.545700
1998-01-01	62128794867.110400
1999-01-01	21302461497.105700
2000-01-01	-31389017928.711400
2001-01-01	29616316745.578800
2002-01-01	79924782539.770110
2003-01-01	64946779209.447700
2004-01-01	72541619759.010800
2005-01-01	-1535259996.013350
2006-01-01	-43721252053.353096
2007-01-01	-11055114447.880100
2008-01-01	-91417126377.425310
2009-01-01	12686988923.579800
2010-01-01	-23615724880.546898
2011-01-01	-32818483892.876102
2012-01-01	105734245949.196000
2013-01-01	202151697036.082000
2014-01-01	242423879558.908000
2015-01-01	262598445074.389980
2016-01-01	292195618439.083000
2017-01-01	261177236324.386000