Year	U.S. Dollars
2000-01-01	10294600000
2001-01-01	11631500000
2002-01-01	11498600000
2003-01-01	12553900000
2004-01-01	15222400000
2005-01-01	14904100000
2006-01-01	16744900000
2007-01-01	20565700000
2008-01-01	28114400000
2009-01-01	28448800000
2010-01-01	29224200000
2011-01-01	31443800000
2012-01-01	33032100000
2013-01-01	34478700000
2014-01-01	33677100000
2015-01-01	31146100000
2016-01-01	31198000000
2017-01-01	32920500000
2018-01-01	35241500000
2019-01-01	36303200000