Year	current US$
1970	216454.944897696
1971	232581.902380103
1972	289074.939874579
1973	325548.510199501
1974	324439.645609448
1975	427765.731059519
1976	421532.338447074
1977	501957.890712786
1978	556430.552153988
1979	582463.751245952
1980	657486.804059208
1981	746597.981214822
1982	738362.722609689
1983	816434.83212596
1984	1011023.20478738
1985	1041845.18674341
1986	1068568.90738069
1987	1163000.1998591
1988	4543889.53600804
1989	5907818.03890301
1990	6359888.31294846
1991	7947412.99431043
1992	9647262.45758533
1993	9694706.09424431
1994	11095460.7430888
1995	12453698.5070756
1996	8666010.03030078
1997	13769119.7127623
1998	14257780.7459728
1999	15605282.4413729
2000	17509970.2624347
2001	18811785.1769009
2002	19910474.4045944
2003	26899772.823727
2004	29330555.9224292
2005	31850577.1260802
2006	32633312.6490877
2007	35060222.020025
2008	34372896.7037123
2009	38086479.7197249
2010	38077501.1111223
2011	37782573.2761419
2012	50285031.1085457
2013	51354986.4342818
2014	54402785.5372461
2015	55910484.1144797
2016	56691543.5760144
2017	49220611.5809206
2018	52797057.0523503
2019	56566715.1265959
2020	48337273.1371903
2021	57503496.9952118