Year	current US$
1970	319999.99284744303
1971	270000.010728836
1972	159999.99642372102
1973	159999.99642372102
1974	129999.995231628
1975	300000.011920929
1976	289999.99165535
1977	340000.00357627904
1978	370000.00476837205
1979	920000.016689301
1980	3069999.9332428
1981	3869999.8855590797
1982	4389999.8664856
1983	6110000.1335144
1984	5360000.1335144
1985	7550000.19073486
1986	6230000.01907349
1987	6989999.771118159
1988	9430000.30517578
1989	12470000.2670288
1990	11770000.4577637
1991	14930000.3051758
1992	16489999.7711182
1993	17209999.084472697
1994	16340000.152587902
1995	14159999.8474121
1996	13000000
1997	6230000.01907349
1998	4659999.84741211
1999	6179999.82833862
2000	6469999.79019165
2001	5349999.90463257
2002	5019999.98092651
2003	5360000.1335144
2004	7789999.96185303
2005	9560000.4196167
2006	11670000.076293899
2007	18510000.2288818
2008	22409999.8474121
2009	22100000.3814697
2010	20180000.3051758
2011	22860000.6103516
2012	24810560.2264404
2013	21020969.390869103
2014	22660026.550293002
2015	20364892.9595947
2016	21715518.951416
2017	24841289.5202637
2018	19669013.9770508
2019	21642000.1983643
2020	19877000.808715798
2021	17927999.49646
2022	19481000.9002686