Year	U.S. Dollars
2000-01-01	868400000
2001-01-01	846900000
2002-01-01	927800000
2003-01-01	1147300000
2004-01-01	1445000000
2005-01-01	1682400000
2006-01-01	2349100000
2007-01-01	3707100000
2008-01-01	4154600000
2009-01-01	3062100000
2010-01-01	3303800000
2011-01-01	4131300000
2012-01-01	5003700000
2013-01-01	5124500000
2014-01-01	4143200000
2015-01-01	3319300000
2016-01-01	2973500000
2017-01-01	3177500000
2018-01-01	3687800000
2019-01-01	4074400000