Year U.S. Dollars 2010-01-01 14964400000000 2011-01-01 15517925000000 2012-01-01 16155250000000 2013-01-01 16691500000000 2014-01-01 17427600000000 2015-01-01 18120700000000 2016-01-01 18624450000000 2017-01-01 19390600000000 2018-01-01 20412870100000 2019-01-01 21410231000000 2020-01-01 22235730500000 2021-01-01 23044778200000 2022-01-01 23787096100000 2023-01-01 24536799400000