Year	U.S. Dollars
2000-01-01	13821400000
2001-01-01	14287500000
2002-01-01	15310800000
2003-01-01	15117200000
2004-01-01	18664400000
2005-01-01	21279200000
2006-01-01	27970200000
2007-01-01	77869100000
2008-01-01	30917700000
2009-01-01	25506200000
2010-01-01	32811400000
2011-01-01	47064700000
2012-01-01	47064700000
2013-01-01	68218400000
2014-01-01	78487900000
2015-01-01	93981400000
2016-01-01	85394200000
2017-01-01	95373700000
2018-01-01	104481500000
2019-01-01	112943100000