Year	U.S. dollars (Billions)
2014	-0.043
2015	-0.012
2016	-0.122
2017	-0.040
2018	0.029
2019	0.116
2020	-0.284
2021	-0.221
2022	-0.067
2023	-0.164
2024	-0.143
2025	-0.120
2026	-0.095
2027	-0.067
2028	-0.036
2029	-0.003