Year	current US$
1970	78420.2616314541
1971	55582.7617094857
1972	86653.4250306078
1973	277396.376072221
1974	292062.647357407
1975	220576.079039977
1976	204951.289079131
1977	96778.7630843812
1978	147894.766095031
1979	148819.757259001
1980	306836.246858889
1981	159667.929473684
1982	134321.813060818
1983	135840.51894317
1984	197688.094117647
1985	222476.8
1986	364010.4
1987	354853.2
1988	344744.4
1989	337903.8
1990	332662.2
1991	330946.026666667
1992	532267.310063768
1993	407229.208046038
1994	542345.350418612
1995	834193.819136654
1996	801006.940760035
1997	728160.940132107
1998	608625.634782609
1999	320776.011001665
2000	313235.821093001
2001	361316.138082748
2002	401602.918791946
2003	579737.881305307
2004	639188.977962188
2005	419166.382546417
2006	481004.598518182
2007	715021.368737209
2008	1201794.98668593
2009	1121350.13823638
2010	1086854.72988376
2011	1436178.02471546
2012	1166757.56805522
2013	1038242.38910787
2014	1544271.69594673
2015	1178847.25280465
2016	1351000.36763884
2017	1554284.5353758
2018	711648.667778339
2019	635548.275680525
2020	835865.700421146
2021	718503.053747016