Year	U.S. Dollars
2000-01-01	2059200000
2001-01-01	2368800000
2002-01-01	2667000000
2003-01-01	3056500000
2004-01-01	4235000000
2005-01-01	8331900000
2006-01-01	13954500000
2007-01-01	22516900000
2008-01-01	32133200000
2009-01-01	22873100000
2010-01-01	28541000000
2011-01-01	37214500000
2012-01-01	36914900000
2013-01-01	35907300000
2014-01-01	32556800000
2015-01-01	20030000000
2016-01-01	17578800000
2017-01-01	19050200000
2018-01-01	22376000000
2019-01-01	23573600000