Year	U.S. Dollars
2000-01-01	13134000000
2001-01-01	15716400000
2002-01-01	18137100000
2003-01-01	21355300000
2004-01-01	26646000000
2005-01-01	35182700000
2006-01-01	45263800000
2007-01-01	59440100000
2008-01-01	64833100000
2009-01-01	59840500000
2010-01-01	74539700000
2011-01-01	75409500000
2012-01-01	67694200000
2013-01-01	56084800000
2014-01-01	62319100000
2015-01-01	64059200000
2016-01-01	57648700000
2017-01-01	58238900000
2018-01-01	41676000000
2019-01-01	43160300000