Year	U.S. Dollars
2000-01-01	21299000000
2001-01-01	17906300000
2002-01-01	17014900000
2003-01-01	24939700000
2004-01-01	32775800000
2005-01-01	50075800000
2006-01-01	64899800000
2007-01-01	72722700000
2008-01-01	98405200000
2009-01-01	65904200000
2010-01-01	76128700000
2011-01-01	112935100000
2012-01-01	128492400000
2013-01-01	121931300000
2014-01-01	110738800000
2015-01-01	60475800000
2016-01-01	52149800000
2017-01-01	58816900000
2018-01-01	68387100000
2019-01-01	67955200000