Year	U.S. Dollars
2000-01-01	2123100000
2001-01-01	2508200000
2002-01-01	3140800000
2003-01-01	4961500000
2004-01-01	9275600000
2005-01-01	7151200000
2006-01-01	19116200000
2007-01-01	17629300000
2008-01-01	19875400000
2009-01-01	23093400000
2010-01-01	28294200000
2011-01-01	29401300000
2012-01-01	28357400000
2013-01-01	24787800000
2014-01-01	29208700000
2015-01-01	27915200000
2016-01-01	29713500000
2017-01-01	31213300000
2018-01-01	33213300000
2019-01-01	35213300000