Year	constant 2015 US$
2000	7628908675.184645
2001	6929665334.226957
2002	7498426893.919477
2003	7408447813.983319
2004	7113199743.37312
2005	7411065169.265092
2006	9021594527.235914
2007	9952552090.577047
2008	11890389320.693867
2009	11841032160.434752
2010	12812598746.930643
2011	13488119245.934965
2012	14225402253.389896
2013	14360442927.13648
2014	14855941385.682505
2015	17149447462.320925
2016	18353989415.067524
2017	20257429363.94769
2018	21968542889.388058
2019	24096416731.795765
2020	23659634487.152054
2021	25451819429.984478
2022	27630515865.234386
2023	30024705530.07002