Year	U.S. Dollars
2000-01-01	6351100000
2001-01-01	7222400000
2002-01-01	7513700000
2003-01-01	8658000000
2004-01-01	10998700000
2005-01-01	11173000000
2006-01-01	13778900000
2007-01-01	19440800000
2008-01-01	26587800000
2009-01-01	21534500000
2010-01-01	24239300000
2011-01-01	29222400000
2012-01-01	34416100000
2013-01-01	41844000000
2014-01-01	37901200000
2015-01-01	36776900000
2016-01-01	31232800000
2017-01-01	31473400000
2018-01-01	33313800000
2019-01-01	34805900000