Year	U.S. Dollars
2000-01-01	22562300000
2001-01-01	20001800000
2002-01-01	20009200000
2003-01-01	26030000000
2004-01-01	34070200000
2005-01-01	48840000000
2006-01-01	57320000000
2007-01-01	63480000000
2008-01-01	82082000000
2009-01-01	48170600000
2010-01-01	60658400000
2011-01-01	76633800000
2012-01-01	75685700000
2013-01-01	68293900000
2014-01-01	63541600000
2015-01-01	38040300000
2016-01-01	32487300000
2017-01-01	37516500000
2018-01-01	42998800000
2019-01-01	41200900000