Year U.S. Dollars 2015-01-01 134090900000 2016-01-01 188091600000 2017-01-01 195440000000 2018-01-01 194496000000 2019-01-01 198960200000 2020-01-01 219696700000 2021-01-01 233393700000 2022-01-01 231441300000 2023-01-01 238893600000