Year	U.S. Dollars
2000-01-01	454200000
2001-01-01	562000000
2002-01-01	747600000
2003-01-01	981700000
2004-01-01	1117400000
2005-01-01	1458800000
2006-01-01	1646700000
2007-01-01	1968400000
2008-01-01	1943600000
2009-01-01	1559300000
2010-01-01	2210700000
2011-01-01	2742200000
2012-01-01	2917900000
2013-01-01	3155500000
2014-01-01	3318300000
2015-01-01	3136300000
2016-01-01	3500400000
2017-01-01	4229800000
2018-01-01	4701500000
2019-01-01	4930300000