Year	U.S. Dollars
2000-01-01	103893500000
2001-01-01	103311600000
2002-01-01	109816100000
2003-01-01	124346500000
2004-01-01	147824200000
2005-01-01	180617500000
2006-01-01	222116500000
2007-01-01	257916100000
2008-01-01	315474600000
2009-01-01	253547400000
2010-01-01	289880400000
2011-01-01	350908400000
2012-01-01	374818000000
2013-01-01	390427300000
2014-01-01	403197700000
2015-01-01	357949200000
2016-01-01	348743300000
2017-01-01	377435400000
2018-01-01	411827300000
2019-01-01	427830400000