Year	constant 2015 US$
1990	346936382.59041756
1991	326894315.0652543
1992	325099249.1508253
1993	330791470.11473846
1994	374149620.34415144
1995	375311449.41760874
1996	398020283.61221874
1997	449713995.8917239
1998	439324155.5506812
1999	457049693.22691697
2000	594117916.0060266
2001	651679965.4778569
2002	717749790.3615863
2003	760627174.0309383
2004	803566948.7516745
2005	867857123.0929102
2006	905742628.6214215
2007	1025775874.450064
2008	1065166910.7287571
2009	1131640261.3951838
2010	1227708845.8764791
2011	1313411969.4560916
2012	1364794913.2606575
2013	1406500693.9541771
2014	1519934783.2691348
2015	1625361112.17538
2016	1708118879.3519216
2017	1811969998.1501813
2018	1877566380.606332
2019	2074952661.1641016
2020	1979930105.1958523
2021	1987623390.7652392