Year	current US$
1980	1524103.284
1982	1453194.499
1983	742575.5262
1984	557780.0274
1985	431866.8544
1986	111855.8943
1987	364250.3023
1988	264500.767
1989	140438.2586
1990	56125.6774974552
1991	18960.9297627344
1992	8809.83471215034
1993	8458.76710826033
1994	7499.06634493589
1995	6753.03638363868
1996	6407.94150309672
1997	1528.30030082044
1998	1406.99326817675
1999	36747.6907983893
2001	339399.635392519
2002	2616587.13068813
2003	3403188.21095072
2004	2604416.70506386
2005	2366622.69268537
2006	3883889.07649936
2007	3787475.67382996
2008	3215136.56647711
2009	3491081.88427634
2010	10570719.202145
2011	20610760.5940469
2012	20085152.9694684
2013	8997559.77869679
2014	6840003.96801435
2015	6763601.76017169
2016	5474298.47945103
2017	4073973.56355576
2018	7005877.64553058
2019	8294458.3626165
2020	7710762.9252128
2021	8647625.52347246
2022	8288648.324361