Year	constant 2015 US$
1996	25124251644.514996
1997	25589481658.817085
1998	26757872903.574093
1999	28223286558.489212
2000	29617014695.739433
2001	31249074448.53628
2002	31931164611.205322
2003	33584850458.028008
2004	35896632552.98011
2005	40989118314.44435
2006	46142191916.098335
2007	49867562857.776024
2008	52001442704.79293
2009	53346996175.422615
2010	55454356432.6852
2011	57064474382.05437
2012	58661963955.35005
2013	60028985665.30466
2014	61427578315.44297
2015	63396500000
2016	64183405684.07896
2017	65535509746.25093
2018	66927867514.2488
2019	67891728318.05744
2020	60279658930.36332
2021	62757030606.57898
2022	65434404188.85844