Year	constant 2015 US$
1995	19509644711.901947
1996	21708070167.311714
1997	23091778088.10976
1998	23673773074.8871
1999	23954221319.711708
2000	24480302404.366005
2001	24852016960.547646
2002	24715978475.515224
2003	24445189649.916397
2004	24598197025.098038
2005	24305975738.991005
2006	24574345826.48827
2007	25119639236.35663
2008	24510082839.86327
2009	21874835502.337097
2010	23419959796.514828
2011	23556940257.99139
2012	22737709224.94061
2013	22916471722.85233
2014	23537152095.587097
2015	24203865048.641003
2016	24706457745.40077
2017	26194489834.765614
2018	27127184094.06327
2019	27281254382.594128
2020	25307341079.628113
2021	26910185562.914833
2022	27284891365.849594
2023	26636837091.077328