Year	current US$
1968	20409999.8474121
1969	1259999.9904632599
1970	2079999.9237060498
1971	2089999.9141693101
1972	2440000.05722046
1973	2680000.0667572
1974	2849999.90463257
1975	3930000.0667572
1976	3099999.90463257
1977	1960000.03814697
1978	2380000.1144409203
1979	3240000.00953674
1980	3670000.07629395
1981	3859999.89509583
1982	3400000.09536743
1983	2369999.8855590797
1984	1929999.94754791
1985	1649999.97615814
1986	1889999.98569489
1987	1960000.03814697
1988	2259999.99046326
1989	2849999.90463257
1990	2680000.0667572
1991	2700000.04768372
1992	1889999.98569489
1993	1480000.01907349
1994	870000.004768372
1995	340000.00357627904
1996	430000.00715255697
1997	829999.983310699
1998	740000.009536743
1999	649999.976158142
2000	889999.985694885
2001	509999.99046325695
2002	460000.00834465
2003	529999.971389771
2004	649999.976158142
2005	610000.014305115
2006	610000.014305115
2007	800000.011920929
2008	730000.019073486
2009	569999.992847443
2010	1269999.98092651
2011	1559999.9427795399
2012	641494.691371918
2013	535130.977630615
2014	719824.373722076
2015	687497.138977051
2016	444677.174091339
2017	377584.308385849
2018	359230.607748032
2019	349999.99403953605
2020	577277.3027420039
2021	738322.913646698
2022	666727.4236679081