Year	US Dollars, Monthly Level
1996-01-01	-2412046520.9025702
1997-01-01	-2908311893.9001503
1998-01-01	-3560125708.3939004
1999-01-01	1242471200.7450700
2000-01-01	718958170.1883220
2001-01-01	402954565.8786090
2002-01-01	1045724684.0937899
2003-01-01	3827293945.5705900
2004-01-01	10310878805.2990000
2005-01-01	11331710859.0242000
2006-01-01	22770310354.9717000
2007-01-01	24162013729.4817000
2008-01-01	6134193759.2942600
2009-01-01	15306027176.8332000
2010-01-01	16164894120.5119000
2011-01-01	10721790617.0523000
2012-01-01	2740387047.5911500
2013-01-01	2168747594.6752300
2014-01-01	6436963819.3338995
2015-01-01	3478861046.9941597
2016-01-01	5365858244.6527100
2017-01-01	7816270911.5552600