Year	U.S. Dollars
2000-01-01	3383100000
2001-01-01	3451700000
2002-01-01	2986000000
2003-01-01	3875400000
2004-01-01	3588900000
2005-01-01	5410600000
2006-01-01	6326500000
2007-01-01	8850500000
2008-01-01	12157900000
2009-01-01	11677100000
2010-01-01	12300400000
2011-01-01	15000400000
2012-01-01	14165500000
2013-01-01	15346200000
2014-01-01	14556400000
2015-01-01	13058300000
2016-01-01	12695300000
2017-01-01	13894000000
2018-01-01	15644200000
2019-01-01	16340300000