Year	U.S. Dollars
2000-01-01	52932000000
2001-01-01	47887800000
2002-01-01	49604000000
2003-01-01	54725100000
2004-01-01	66746100000
2005-01-01	87690200000
2006-01-01	113429000000
2007-01-01	145651300000
2008-01-01	176684600000
2009-01-01	162069000000
2010-01-01	174203200000
2011-01-01	197977300000
2012-01-01	215206200000
2013-01-01	229995400000
2014-01-01	259006900000
2015-01-01	247307300000
2016-01-01	198110200000
2017-01-01	193200200000
2018-01-01	203935200000
2019-01-01	211818600000