Year	current US$
1970	5780000.20980835
1971	16750000
1972	3220000.02861023
1973	3500000
1974	4730000.01907349
1975	1049999.95231628
1976	1710000.03814697
1977	2400000.09536743
1978	1220000.02861023
1979	3140000.10490417
1980	6519999.98092651
1981	3519999.98092651
1982	2470000.02861023
1983	879999.995231628
1984	550000.011920929
1985	3299999.95231628
1986	469999.998807907
1987	930000.007152557
1988	1429999.94754791
1989	2119999.8855590797
1990	26539999.48501589
1991	4479999.944567679
1992	3529999.97138977
1993	7290000.021457672
1994	31690000.504255287
1995	32149999.707937278
1996	39999.9991059303
1997	159999.99642372102
1998	549999.982118607
1999	12770000.21934511
2000	12190000.042319305
2001	20280000.045895584
2002	11390000.047162164
2003	7489999.964833258
2004	5420000.0148266535
2005	6559999.883174899
2006	5330000.052228573
2007	8189999.938011159
2008	10980000.019073494
2009	4050000.0100582847
2010	8509999.841451641
2011	7260000.169277193
2012	3894126.854014757
2013	3826200.9471654943
2014	5034870.028495785
2015	2705914.9602428107
2016	10584714.20407295
2017	2220699.937082824
2018	261821.73607230696
2019	2276889.9146467494
2020	1798961.393535133
2021	1136450.0150084486
2022	4019471.7645645128