Year	US Dollars, Monthly Level
1999-01-01	4212439999999.9995
2000-01-01	4594520000000.0000
2001-01-01	4444060000000.0000
2002-01-01	4603200000000.0000
2003-01-01	5295080000000.0000
2004-01-01	6257050000000.0000
2005-01-01	6862240000000.0000
2006-01-01	7769040000000.0000
2007-01-01	8907120000000.0000
2008-01-01	9882830000000.0000
2009-01-01	7732920000000.0000
2010-01-01	9040160000000.0000
2011-01-01	10546990000000.0000
2012-01-01	10362210000000.0000
2013-01-01	10512070000000.0000
2014-01-01	10692490000000.0000
2015-01-01	9468080000000.0000
2016-01-01	9362580000000.0000