Year	U.S. Dollars
2000-01-01	4569200000
2001-01-01	5099500000
2002-01-01	5446400000
2003-01-01	6699500000
2004-01-01	8315700000
2005-01-01	13208000000
2006-01-01	21767300000
2007-01-01	28566200000
2008-01-01	32356900000
2009-01-01	28370600000
2010-01-01	29717300000
2011-01-01	43792600000
2012-01-01	54693400000
2013-01-01	58953300000
2014-01-01	64004400000
2015-01-01	59271400000
2016-01-01	63475300000
2017-01-01	66306300000
2018-01-01	69754000000
2019-01-01	70587200000