Year	Billions of U.S. Dollars
2015-01-01	-8500000
2016-01-01	-11700000
2017-01-01	-7600000
2018-01-01	-8800000
2019-01-01	-13500000
2020-01-01	-14600000
2021-01-01	-14500000
2022-01-01	-14900000
2023-01-01	-14100000