Year	US Dollars, Monthly Level
1996-01-01	16626769802.999998
1997-01-01	17870199662.000000
1998-01-01	16322830211.000000
1999-01-01	17162265433.000002
2000-01-01	19210245166.000000
2001-01-01	18271790807.000000
2002-01-01	18179780682.000000
2003-01-01	21650906899.000000
2004-01-01	33025407002.999996
2005-01-01	41973992484.000000
2006-01-01	59380159233.000000
2007-01-01	68561364483.999990
2008-01-01	64510142785.000000
2009-01-01	55462671482.000000
2010-01-01	71108528875.000000
2011-01-01	81437843854.000000
2012-01-01	78062990217.000000
2013-01-01	76769937149.000000
2014-01-01	75064697830.000000
2015-01-01	62035090308.000000
2016-01-01	60733437128.000000
2017-01-01	69229867714.000000