Year U.S. Dollars 2010-01-01 1343000000 2011-01-01 1332300000 2012-01-01 1342400000 2013-01-01 1399400000 2014-01-01 1435400000 2015-01-01 1507400000 2016-01-01 1541500000 2017-01-01 1398400000 2018-01-01 1373900000 2019-01-01 1529900000 2020-01-01 1639600000 2021-01-01 1721900000 2022-01-01 1788400000 2023-01-01 1848400000