Year U.S. Dollars 2015-01-01 12931100000 2016-01-01 11398600000 2017-01-01 12742600000 2018-01-01 14438200000 2019-01-01 14791000000 2020-01-01 15264000000 2021-01-01 16444100000 2022-01-01 17253800000 2023-01-01 18786700000