Year	U.S. Dollars
2000-01-01	1192300000
2001-01-01	1297300000
2002-01-01	1503200000
2003-01-01	2876000000
2004-01-01	3360600000
2005-01-01	4572200000
2006-01-01	5416200000
2007-01-01	9839900000
2008-01-01	9922400000
2009-01-01	18837000000
2010-01-01	31201000000
2011-01-01	16789300000
2012-01-01	33147500000
2013-01-01	42150800000
2014-01-01	43088300000
2015-01-01	37228400000
2016-01-01	31722400000
2017-01-01	14906900000
2018-01-01	19561000000
2019-01-01	23235500000