Year	U.S. Dollars
2000-01-01	16568300000
2001-01-01	75002400000
2002-01-01	21698500000
2003-01-01	25255500000
2004-01-01	33524700000
2005-01-01	47098500000
2006-01-01	60581200000
2007-01-01	70765200000
2008-01-01	78994200000
2009-01-01	71726200000
2010-01-01	78909900000
2011-01-01	95477700000
2012-01-01	52067500000
2013-01-01	118201200000
2014-01-01	110778800000
2015-01-01	115743600000
2016-01-01	104160800000
2017-01-01	95121600000
2018-01-01	108359800000
2019-01-01	126970700000