Year	U.S. Dollars
2000-01-01	22755200000
2001-01-01	21772100000
2002-01-01	19534700000
2003-01-01	19564600000
2004-01-01	23257700000
2005-01-01	30215800000
2006-01-01	38217100000
2007-01-01	45397600000
2008-01-01	63086400000
2009-01-01	59858000000
2010-01-01	57023300000
2011-01-01	61621900000
2012-01-01	67772900000
2013-01-01	67263600000
2014-01-01	69345200000
2015-01-01	72374400000
2016-01-01	66934000000
2017-01-01	67654000000
2018-01-01	68247600000
2019-01-01	73747600000