Year	US Dollars, Monthly Level
1999-01-01	-1840847587.8288898
2000-01-01	-1642067965.3728302
2001-01-01	-968728041.1946449
2002-01-01	-623909677.7326471
2003-01-01	-1089698727.7599400
2004-01-01	-1404587548.2437300
2005-01-01	-1037869692.5798001
2006-01-01	-839360959.0116739
2007-01-01	-1384011182.6745700
2008-01-01	-3165871213.2011400
2009-01-01	-453597954.8569110
2010-01-01	-912530183.1481770
2011-01-01	-831388057.6208750
2012-01-01	36375030.9725682
2013-01-01	721627093.8926770
2014-01-01	2085989301.5275600
2015-01-01	2095176166.9788500
2016-01-01	2325050260.8103900
2017-01-01	2429356974.4802900