Year	constant 2015 US$
1995	7111090018.593748
1996	7317975339.744138
1997	7867403904.155856
1998	8454145387.079294
1999	8904466712.535934
2000	9438864705.818356
2001	10091320418.22773
2002	10669154731.66523
2003	11710146325.191011
2004	12738740221.676949
2005	14343503052.751558
2006	15921042875.54179
2007	17554768431.113274
2008	17455518064.995304
2009	15976121314.458197
2010	15219987169.984367
2011	15406319874.348822
2012	16451056073.88046
2013	16842444512.638662
2014	17248761447.340225
2015	17819375050.885536
2016	18289569971.23905
2017	18704064015.94452
2018	19407044726.367176
2019	19372014075.871475
2020	18396697878.88046
2021	19921887554.95233
2022	20735132765.958187
2023	20838629237.908577