Year	current US$
1990	2893823361.62386
1991	2709081562.19184
1992	2515400643.09089
1993	1544046744.73579
1994	2016120935.86555
1995	2655069054.34864
1996	2939274138.98653
1997	3105452028.02628
1998	3062526691.16576
1999	3222848325.50602
2000	3547879977.53298
2001	3655853837.37708
2002	4364971723.40759
2003	4587447283.33793
2004	6077083432.11292
2005	7975943568.21031
2006	11823934535.324
2007	13404464039.8891
2008	15249994115.2504
2009	11951992376.5176
2010	13500594945.575
2011	13081473077.1045
2012	13723475643.363
2013	14806347231.5257
2014	15252116720.8215
2015	12662386757.6964
2016	10262699865.9192
2017	9285129765.2977
2018	9935457472.36369
2019	10047745945.2644
2020	9373184984.53109
2021	8870446871.61451