Year	U.S. Dollars
2000-01-01	30896800000
2001-01-01	26960100000
2002-01-01	33167600000
2003-01-01	40707800000
2004-01-01	51094600000
2005-01-01	69056100000
2006-01-01	81291900000
2007-01-01	104071400000
2008-01-01	107048900000
2009-01-01	95969500000
2010-01-01	115219100000
2011-01-01	154787000000
2012-01-01	104282000000
2013-01-01	100074000000
2014-01-01	99932200000
2015-01-01	74434600000
2016-01-01	94443000000
2017-01-01	109499600000
2018-01-01	130314200000
2019-01-01	127521100000