Year	current US$
1990	240534339.963821
1991	265023455.103639
1992	146015758.207705
1993	70670998.4423255
1994	40123699.1195176
1995	53657865.7003758
1996	41066640.0789176
1997	55297375.5752696
1998	59403450.0580204
1999	55205633.3480788
2000	66079336.0784552
2001	69864627.2968169
2002	62876614.9218606
2003	73545090.0791773
2004	82954758.6663946
2005	103767459.090151
2006	110111806.239981
2007	133916885.373975
2008	152706740.312335
2009	124554827.521785
2010	124029577.219287
2011	147352233.811208
2012	177720671.131579
2013	177789623.274495
2014	184515748.766137
2015	185686858.518154
2016	182071586.38191
2017	200929784.165657
2018	223710639.116849
2019	251605944.299689
2020	237089788.000442
2021	262474816.623193