Year	current US$
1990	3525686431.7527986
1991	4047884904.575235
1992	3806393123.6962757
1993	3566391970.2999363
1994	3790932015.255159
1995	4406766865.147402
1996	5396892975.351369
1997	6482480222.504483
1998	9422489053.414812
1999	9994008866.42113
2000	10307121137.118689
2001	10046471286.910082
2002	10175439663.61656
2003	10531021083.957968
2004	10934124618.558195
2005	11713922407.853148
2006	11865392757.173903
2007	13692646610.308489
2008	17129276727.802927
2009	17774215341.610107
2010	21143214048.43791
2011	23727888565.67028
2012	26940834004.757202
2013	30551128872.343624
2014	32766367779.259865
2015	30279416170.778214
2016	29827734726.018997
2017	31904214565.559402
2018	34132783090.45734
2019	35797781152.73518
2020	36047221546.527885
2021	38180519375.794304
2022	41570240648.7466
2023	42606872724.0759