Year	current US$
1971	808.6955531087019
1972	862.9298655003663
1973	961.354341707515
1974	1065.8630148211544
1975	1184.9625449204152
1976	1200.8730922686318
1977	1423.1546929999902
1978	1655.5978195878836
1979	1822.9071431682894
1980	1944.7453502404564
1981	2136.5878472601357
1982	2410.9419319150666
1983	2546.746830338146
1984	2493.8923344031855
1985	2670.6025976084643
1986	2583.524182834968
1987	2836.294835764775
1988	2277.466235433106
1989	2160.4958202540843
1990	2318.2177441787157
1991	2424.346865709208
1992	2788.5667762874036
1993	3004.069488471992
1994	3168.570604282518
1995	3075.090167333144
1996	3213.6228316114516
1997	3338.3158871602604
1998	3533.4505042119777
1999	3556.8450873468973
2000	3584.1845713934727
2001	3559.7651058690813
2002	3742.4857825504087
2003	3718.5172177336117
2004	3973.0374685147367
2005	4260.520093660182
2006	4605.258619015203
2007	5407.732671441368
2008	6339.830789882831
2009	6795.661583449249
2010	7015.425194010874
2011	8352.88381575184
2012	9470.20341907202
2013	10522.961193345876
2014	11017.875257966367
2015	11982.039220080922
2016	12440.269050881943
2017	13242.292985116
2018	13217.710030779077
2019	13342.46870728297
2020	10887.591089765801
2021	11830.987182742614