Year	current US$
1971	230000.004172325
1972	300000.011920929
1973	300000.011920929
1974	340000.00357627904
1975	289999.99165535
1976	1289999.96185303
1977	2079999.9237060498
1978	1289999.96185303
1979	1639999.98569489
1980	2619999.8855590797
1981	3930000.0667572
1982	5289999.96185303
1983	6590000.15258789
1984	13359999.6566772
1985	13340000.1525879
1986	8989999.77111816
1987	14449999.8092651
1988	27659999.8474121
1989	25190000.5340576
1990	30229999.5422363
1991	34119998.9318848
1992	20600000.3814697
1993	7590000.15258789
1994	6019999.98092651
1995	6130000.11444092
1996	3279999.97138977
1997	4260000.228881841
1998	5199999.80926514
1999	4099999.90463257
2000	4039999.96185303
2001	5380000.11444092
2002	5260000.228881841
2003	5639999.8664856
2004	7840000.15258789
2005	7599999.90463257
2006	11199999.8092651
2007	13529999.7329712
2008	16340000.152587902
2009	18170000.0762939
2010	25760000.2288818
2011	21819999.6948242
2012	25729999.5422363
2013	29520000.4577637
2014	56869998.9318848
2015	20930000.3051758
2016	17329999.9237061
2017	16139999.389648398
2018	16260000.2288818
2019	9189999.5803833
2020	11979999.5422363
2021	10670000.076293899
2022	6719999.79019165