Year	current US$
1990	646473906.149614
1991	694773910.334527
1992	760219658.558466
1993	792244327.77607
1994	856509183.029411
1995	890170233.542133
1996	1013136294.97019
1997	949989045.062565
1998	999073586.566591
1999	1016422689.87492
2000	988962647.825868
2001	1018859148.07858
2002	1088652208.7974
2003	1159911150.99458
2004	1182325941.71955
2005	1168198202.0967
2006	1199213311.27628
2007	1214008101.22047
2008	1238561727.1626
2009	1184237442.59925
2010	1375470846.58109
2011	1329749550.00502
2012	1309291826.52325
2013	1310471180.05805
2014	1315853243.52941
2015	1362746727.03852
2016	1392650031.27631
2017	1432700518.36486
2018	1410826564.84905
2019	1427262227.16332
2020	1372504547.57439
2021	1462205065.76171