Year	current US$
1970	340000.00357627904
1971	330000.013113022
1972	239999.994635582
1973	340000.00357627904
1974	589999.973773956
1975	-219999.998807907
1977	159999.99642372102
1978	14630000.1144409
1979	12340000.1525879
1980	10050000.1907349
1981	3400000.09536743
1982	3960000.03814697
1983	3670000.07629395
1984	5289999.96185303
1985	5429999.82833862
1986	8039999.961853029
1987	5780000.20980835
1988	7150000.09536743
1989	10600000.3814697
1990	10180000.3051758
1991	9649999.61853027
1992	11210000.038146999
1993	16590000.152587902
1994	15050000.1907349
1995	18850000.3814697
1996	12100000.3814697
1997	7250000
1998	7230000.01907349
1999	5949999.80926514
2000	5369999.88555908
2001	4409999.84741211
2002	4010000.2288818406
2003	4139999.8664856004
2004	4420000.07629395
2005	5139999.8664856
2006	3940000.05722046
2007	4300000.19073486
2008	4079999.92370605
2009	3650000.09536743
2010	3670000.07629395
2011	4269999.98092651
2012	2736299.27635193
2013	3775460.72006226
2014	4007174.9687194796
2015	4144909.38186646
2016	5334541.32080078
2017	4499000.07247925
2018	4118604.1831970196
2019	4091000.08010864
2020	4578999.9961853
2021	3924999.95231628
2022	3621000.05149841