Year	current US$
1990	2404979871.66849
1991	2806507443.84762
1992	3129961642.68168
1993	3319433623.26423
1994	3905324568.68035
1995	4150764585.46041
1996	4453820372.27982
1997	4841003777.90683
1998	4981501421.43613
1999	5739965787.5996
2000	6319300552.78373
2001	6871380163.0511
2002	7453901957.42477
2003	8190191129.19156
2004	9214597046.88111
2005	10488191338.5294
2006	11873927896.7745
2007	13240775371.7935
2008	14037479411.782
2009	14976680987.1615
2010	15465687056.2762
2011	16466760715.4876
2012	17371885388.1256
2013	18868328231.9284
2014	20382591901.8312
2015	20835177405.9364
2016	21805855665.5488
2017	23438814645.3541
2018	24973707548.3496
2019	25691128276.3791
2020	27656810871.6315
2021	31122747017.8075