Year	U.S. Dollars
2008-01-01	10681700000
2009-01-01	10629000000
2010-01-01	11310100000
2011-01-01	10465300000
2012-01-01	10560800000
2013-01-01	10756200000
2014-01-01	10190900000
2015-01-01	10146800000
2016-01-01	8679400000
2017-01-01	7781200000
2018-01-01	7410100000
2019-01-01	8435600000