Year	US Dollars, Monthly Level
1990-01-01	-5613592350.822149
1991-01-01	-2720000000.000000
1992-01-01	-3594000000.000000
1993-01-01	-1205000000.000000
1994-01-01	-1821000000.000000
1995-01-01	-4077000000.000000
1996-01-01	-4836000000.000000
1997-01-01	-6438000000.000000
1998-01-01	-9515000000.000000
1999-01-01	-11297000000.000000
2000-01-01	-9183000000.000000
2001-01-01	-7049000000.000000
2002-01-01	-6150000000.000000
2003-01-01	-13609000000.000000
2004-01-01	-23118000000.000000
2005-01-01	-43255000000.000000
2006-01-01	-56602300000.000000
2007-01-01	-79211000000.000000
2008-01-01	-126203500000.000000
2009-01-01	-92293500000.000000
2010-01-01	-123881400000.000000
2011-01-01	-161556918600.000000
2012-01-01	-192865788930.000000
2013-01-01	-150586561320.000000
2014-01-01	-140439809200.000000
2015-01-01	-126039447690.000000
2016-01-01	-97072217290.000000
2017-01-01	-150643373990.000000