Year	current US$
1974	29999.999329447703
1976	19999.9995529652
1977	90000.0035762787
1978	400000.00596046395
1979	579999.983310699
1980	569999.992847443
1981	730000.019073486
1982	1289999.96185303
1983	1389999.98569489
1984	1250000
1985	2390000.10490417
1986	2779999.97138977
1987	3309999.94277954
1988	2789999.96185303
1989	3039999.96185303
1990	3250000
1991	3089999.91416931
1992	3569999.9332428
1993	4980000.01907349
1994	5679999.82833862
1995	7690000.05722046
1996	9880000.11444092
1997	10640000.3433228
1998	9500000
1999	8789999.96185303
2000	7769999.98092651
2001	11859999.6566772
2002	20500000
2003	20510000.2288818
2004	25440000.5340576
2005	27579999.9237061
2006	31129999.1607666
2007	37139999.3896484
2008	43409999.8474121
2009	38159999.8474121
2010	33020000.4577637
2011	28750000
2012	26329999.9237061
2013	26280000.6866455
2014	23239999.7711182
2015	19290000.915527303
2016	12470000.2670288
2017	13779999.7329712
2018	6949999.80926514
2019	7030000.20980835
2020	6519999.98092651
2021	5880000.11444092
2022	6440000.05722046