Year U.S. Dollars 2015-01-01 -3009500000 2016-01-01 -2475000000 2017-01-01 -3532100000 2018-01-01 -3844000000 2019-01-01 -4207100000 2020-01-01 -4868700000 2021-01-01 -5498400000 2022-01-01 -6011400000 2023-01-01 -6530200000