Year	U.S. Dollars
2000-01-01	10944000000
2001-01-01	10658800000
2002-01-01	11637500000
2003-01-01	14042400000
2004-01-01	17710700000
2005-01-01	20559900000
2006-01-01	23821700000
2007-01-01	31250800000
2008-01-01	43195900000
2009-01-01	34827000000
2010-01-01	37168600000
2011-01-01	45869100000
2012-01-01	46856600000
2013-01-01	48884200000
2014-01-01	49361300000
2015-01-01	41226300000
2016-01-01	45177000000
2017-01-01	49009300000
2018-01-01	52922800000
2019-01-01	55671600000