Year	U.S. Dollars
2000-01-01	9040900000
2001-01-01	11556600000
2002-01-01	11684600000
2003-01-01	14519800000
2004-01-01	20363200000
2005-01-01	28982400000
2006-01-01	38244000000
2007-01-01	48048400000
2008-01-01	70732700000
2009-01-01	50009100000
2010-01-01	77975800000
2011-01-01	121837900000
2012-01-01	142876100000
2013-01-01	144510400000
2014-01-01	140228800000
2015-01-01	92291200000
2016-01-01	72429400000
2017-01-01	87198000000
2018-01-01	94764000000
2019-01-01	93205700000