Year	constant 2015 US$
2000	6143802183.395217
2001	6243591068.176095
2002	6560253066.075717
2003	6868632236.494409
2004	7228336108.130912
2005	7361478645.777808
2006	7681289452.971716
2007	8121621702.848664
2008	8473243711.907963
2009	8315291194.969978
2010	8395947188.872985
2011	8540492670.224757
2012	8641632454.24419
2013	8676322489.696577
2014	8904337133.369473
2015	9010717939.179764
2016	9195107207.744635
2017	9549422396.01881
2018	9854474531.214207
2019	10343359652.326181
2020	9933404291.031658
2021	10688912113.012138
2022	11276994168.38863
2023	11681451347.667015