Year	current US$
1968	759999.990463257
1969	860000.014305115
1970	949999.988079071
1971	1649999.97615814
1972	1399999.97615814
1973	1490000.0095367401
1974	1519999.98092651
1975	2109999.89509583
1976	2119999.8855590797
1977	2190000.05722046
1978	2390000.10490417
1979	2869999.8855590797
1980	2730000.01907349
1981	3289999.96185303
1982	2970000.02861023
1983	2299999.95231628
1984	4440000.05722046
1985	4090000.1525878897
1986	5039999.96185303
1987	6670000.07629395
1988	7449999.80926514
1989	7139999.8664856
1990	6389999.8664856
1991	6559999.94277954
1992	4800000.19073486
1993	2890000.10490417
1994	1669999.95708466
1995	2190000.05722046
1996	2740000.00953674
1997	3519999.98092651
1998	5800000.19073486
1999	1879999.99523163
2000	1049999.95231628
2001	1149999.97615814
2002	3269999.98092651
2003	2180000.0667572
2004	4159999.8474121103
2005	2559999.94277954
2006	3319999.9332428
2007	3220000.02861023
2008	3880000.1144409203
2009	5989999.771118159
2010	4400000.09536743
2011	4300000.19073486
2012	3507530.21240234
2013	2954010.96343994
2014	4111786.3655090295
2015	4355675.2204895
2016	5740872.38311768
2017	4512260.43701172
2018	7305573.9402771
2019	7461543.56002808
2020	13616715.4312134
2021	8877466.20178223
2022	7797838.68789673