Year	U.S. dollars (Billions)
1997	36.963
1998	31.471
1999	21.114
2000	20.432
2001	17.405
2002	35.422
2003	43.052
2004	68.941
2005	132.378
2006	231.843
2007	353.183
2008	420.569
2009	243.257
2010	237.810
2011	136.097
2012	215.392
2013	148.204
2014	236.047
2015	293.022
2016	191.337
2017	188.676
2018	24.131
2019	102.910
2020	248.836
2021	352.886
2022	401.855
2023	264.200
2024	235.710
2025	275.509
2026	284.874
2027	286.203
2028	278.695
2029	268.682