Year	U.S. Dollars
2000-01-01	9192400000
2001-01-01	10446200000
2002-01-01	10270800000
2003-01-01	11749000000
2004-01-01	13983000000
2005-01-01	14785700000
2006-01-01	16656600000
2007-01-01	20826400000
2008-01-01	26555000000
2009-01-01	21097000000
2010-01-01	24352700000
2011-01-01	25907800000
2012-01-01	26400000000
2013-01-01	26389800000
2014-01-01	26921600000
2015-01-01	22272300000
2016-01-01	21474200000
2017-01-01	22301500000
2018-01-01	21999900000
2019-01-01	22388200000