Year	current US$
1970	6346.0170212766
1971	5360.74468085106
1972	6383.93592617007
1973	6177.92195121951
1974	7153.9875
1975	9585.09553571429
1976	7851.9375
1977	13390.9285714286
1978	17540.6
1979	16057.8
1980	20654.425
1981	22358.05
1982	56894.9333333333
1983	39207.4571428571
1984	40779.3047619048
1985	15238.476
1986	45976.5428571429
1987	48651.2190476191
1988	49487.8476190476
1989	51934.3523809524
1990	54317.4761904762
1991	55902
1992	48343.3853364613
1993	35370.5910832625
1994	28102.6086956522
1995	43081.0068965517
1996	62764.0275862069
1997	64250.0137931034
1998	92699.2
1999	40399.4436336349
2000	40135.5296493556
2001	45336.9230769231
2002	51092.9163461539
2003	73685.8907678237
2004	72523.1990877193
2005	72565.4954002383
2006	89522.3850610184
2007	83414.1994069554
2008	147738.833573041
2009	145152.927310567
2010	175263.565468715
2011	203402.56439227
2012	235924.571407573
2013	197723.850476858
2014	320214.586024886
2015	293616.330195193
2016	230111.719875071
2017	287196.629308937
2018	147518.089042699
2019	200568.08515198
2020	185166.811066672
2021	173964.447246005