Year	current US$
1990	648049194.018394
1991	666849737.684651
1992	852115814.641481
1993	673758229.197171
1994	490856348.352639
1995	496373475.58154
1996	432791451.064251
1997	438571101.49368
1998	453486280.125925
1999	463656316.093832
2000	513971015.733827
2001	512340600.176658
2002	527599313.53259
2003	600338057.462261
2004	624587547.73924
2005	698918058.163332
2006	747730315.856642
2007	711562224.272141
2008	817209193.718016
2009	704245663.107867
2010	694737062.201258
2011	813718419.633031
2012	935519180.511131
2013	1000147461.64778
2014	1085545260.80633
2015	1104732474.07372
2016	1157788570.376
2017	1195850252.29644
2018	1282320326.96519
2019	1448059408.31306
2020	1460780505.29823
2021	1677225720.81311