Year	constant 2015 US$
1990	30889999355.44158
1991	29136787092.17467
1992	22942606101.208794
1993	19219740983.119278
1994	17342731077.326656
1995	17913320835.87343
1996	18837373099.266006
1997	20402932401.86327
1998	21928206400.914833
1999	21677880321.5578
2000	22478991899.59178
2001	23945995391.14061
2002	25562688814.32811
2003	28263631519.62108
2004	30120407999.15936
2005	32449428669.36014
2006	34855268683.56912
2007	38726810730.70623
2008	39739293390.5074
2009	33842535273.85467
2010	34401356974.39842
2011	36478857729.37186
2012	37881055682.492165
2013	39225860752.80623
2014	40613283322.762085
2015	41435533340.38826
2016	42479223269.26404
2017	44298437189.89021
2018	46067411257.315994
2019	48216768505.13787
2020	48204901155.25974
2021	51234439417.26599
2022	52484649637.55115
2023	52308255949.66091