Year US Dollars 2008-01-01 750000000 2009-01-01 800000000 2010-01-01 600000000 2011-01-01 600000000 2012-01-01 800000000 2013-01-01 750000000 2014-01-01 750000000 2015-01-01 750000000 2016-01-01 750000000 2017-01-01 750000000 2018-01-01 750000000 2019-01-01 751000000 2020-01-01 752000000 2021-01-01 752000000