Year	current US$
1990	324533847.857542
1991	322329502.478498
1992	389036047.735251
1993	423463583.180196
1994	439743128.500369
1995	442868077.397416
1996	438796048.499545
1997	489751028.751482
1998	518915645.303305
1999	525289718.542082
2000	512036736.421293
2001	534906190.739495
2002	549628904.524527
2003	584337606.603596
2004	755909675.645993
2005	820949770.14449
2006	906755306.751748
2007	846785801.279251
2008	783140557.225753
2009	703055779.850612
2010	812404849.809489
2011	868403593.241746
2012	875995695.615983
2013	1102533983.64592
2014	1132657343.40951
2015	1155276355.48746
2016	1189645617.35202
2017	1261706747.66592
2018	1338051823.68517
2019	1402402857.04624
2020	1055789916.70416
2021	1216133029.01781