Year	constant 2015 US$
1990	2244.1370325526295
1991	2250.0703250117654
1992	2394.254270990428
1993	2568.0231316035556
1994	2712.543809664165
1995	2873.4227908635344
1996	2840.595242551288
1997	2897.132340522284
1998	2979.284156403692
1999	2943.2845996360656
2000	2912.190842515861
2001	2921.3385858597053
2002	2931.672608231128
2003	2918.605488440649
2004	2880.1832065562307
2005	2993.873303616805
2006	3105.7135856048667
2007	3117.834627939994
2008	3053.9799744483917
2009	2921.3549886926435
2010	2957.4112920746566
2011	3045.5179158513934
2012	3064.355929623298
2013	3054.8119428684968
2014	3070.560141444017
2015	3181.578241876847
2016	3246.255897837871
2017	3246.2149192945294
2018	3250.3299428226546
2019	3376.4255674724545
2020	3034.6858430295524
2021	3251.3668135102903