Year	U.S. Dollars
2000-01-01	8969800000
2001-01-01	10579000000
2002-01-01	11578000000
2003-01-01	13306300000
2004-01-01	18925600000
2005-01-01	25459000000
2006-01-01	32880700000
2007-01-01	44990100000
2008-01-01	49571000000
2009-01-01	39001200000
2010-01-01	44260100000
2011-01-01	51322700000
2012-01-01	61543700000
2013-01-01	63261500000
2014-01-01	56980300000
2015-01-01	45426700000
2016-01-01	39132100000
2017-01-01	42580500000
2018-01-01	46379500000
2019-01-01	47408900000