Year	U.S. dollars (Billions)
2014	-0.001
2015	0.029
2016	-0.036
2017	-0.118
2018	-0.233
2019	-0.112
2020	-0.224
2021	-0.288
2022	-0.285
2023	-0.264
2024	-0.236
2025	-0.238
2026	-0.237
2027	-0.240
2028	-0.247
2029	-0.252