Year	US Dollars
2009-01-01	-3354500000
2010-01-01	-2916700000
2011-01-01	-242600000
2012-01-01	-307700000
2013-01-01	-2866500000
2014-01-01	-2640800000
2015-01-01	-5577100000
2016-01-01	-7207400000
2017-01-01	-4369000000
2018-01-01	-3828700000
2019-01-01	-3629500000