Year U.S. Dollars 2015-01-01 297600000 2016-01-01 308000000 2017-01-01 311900000 2018-01-01 321300000 2019-01-01 340900000 2020-01-01 354600000 2021-01-01 369000000 2022-01-01 383900000 2023-01-01 399400000