Year	current US$
1968	1070000.05245209
1969	1110000.01430511
1970	1519999.98092651
1971	2140000.10490417
1972	1830000.04291534
1973	2160000.08583069
1974	2180000.0667572
1975	1779999.97138977
1976	1450000.04768372
1977	1250000
1978	2220000.02861023
1979	2000000
1980	3049999.95231628
1981	3329999.92370605
1982	2650000.09536743
1983	1960000.03814697
1984	3130000.1144409203
1985	3309999.94277954
1986	4380000.11444092
1987	3890000.10490417
1988	6760000.228881841
1989	6900000.09536743
1990	6699999.80926514
1991	5639999.8664856
1992	4670000.07629395
1993	2900000.09536743
1994	1690000.0572204601
1995	2789999.96185303
1996	3140000.10490417
1997	3380000.1144409203
1998	2500000
1999	3769999.98092651
2000	2809999.94277954
2001	2250000
2002	1620000.00476837
2003	2730000.01907349
2004	2069999.9332428002
2005	1649999.97615814
2006	5099999.90463257
2007	4599999.90463257
2008	5570000.17166138
2009	6780000.20980835
2010	5840000.15258789
2011	4579999.92370605
2012	4709887.50457764
2013	4609371.18530273
2014	5624405.86090088
2015	4978053.09295654
2016	4695254.80270386
2017	4245943.06945801
2018	4830159.18731689
2019	5073197.84164429
2020	7988843.44100952
2021	5778313.15994263
2022	7121178.62701416