Year	current US$
1990	355166826.415092
1991	350076898.404178
1992	404557421.823184
1993	454734222.119964
1994	503889228.723577
1995	525724786.733882
1996	550738661.523468
1997	604959911.233638
1998	648644588.673889
1999	704714998.044607
2000	636477650.036581
2001	673805516.595968
2002	692650406.080907
2003	781048818.165125
2004	823811358.807857
2005	845728015.096063
2006	912284963.238619
2007	972185116.980222
2008	989507433.319388
2009	1033722171.9626
2010	1183425021.46288
2011	1181204082.28606
2012	1195886220.46497
2013	1276852748.97137
2014	1316863325.13612
2015	1373178678.84283
2016	1391931783.75163
2017	1411372786.87579
2018	1472729054.70363
2019	1466002233.01245
2020	1467502989.76842
2021	1585407651.41612