Year	US Dollars
2008-01-01	57404594210
2009-01-01	32918186530
2010-01-01	62099850532
2011-01-01	63943259550
2012-01-01	91756269879
2013-01-01	67254899199
2014-01-01	40376301680
2015-01-01	-3736820558
2016-01-01	91106651647
2017-01-01	106000000000
2018-01-01	102000000000
2019-01-01	112000000000
2020-01-01	94055679750
2021-01-01	103000000000