Year	U.S. dollars (Billions)
1992	-0.198
1993	-0.160
1994	-0.123
1995	-0.318
1996	-0.823
1997	-0.916
1998	-1.364
1999	-0.600
2000	-0.187
2001	-0.052
2002	-0.768
2003	-2.021
2004	-2.589
2005	0.167
2006	3.708
2007	9.019
2008	16.454
2009	10.173
2010	15.040
2011	17.146
2012	14.916
2013	12.318
2014	10.431
2015	-0.222
2016	-1.363
2017	1.685
2018	6.051
2019	4.365
2020	-0.228
2021	8.292
2022	23.478
2023	7.598
2024	6.658
2025	6.573
2026	5.206
2027	4.782
2028	4.096
2029	4.193