Year	U.S. Dollars
2015-01-01	3568500000
2016-01-01	1391000000
2017-01-01	-3157800000
2018-01-01	-5823100000
2019-01-01	-7236200000
2020-01-01	-7771200000
2021-01-01	-7844700000
2022-01-01	-7743200000
2023-01-01	-7541500000