Year	current US$
1968	1870000.00476837
1969	19999.9995529652
1970	1080000.04291534
1971	660000.026226044
1972	50000.0007450581
1973	540000.021457672
1974	109999.999403954
1975	3529999.97138977
1976	980000.019073486
1977	3519999.98092651
1978	3910000.08583069
1979	2140000.10490417
1980	3039999.96185303
1981	4659999.84741211
1982	4179999.8283386203
1983	2289999.96185303
1984	2779999.97138977
1985	6050000.19073486
1986	5460000.03814697
1987	6159999.84741211
1988	8989999.77111816
1989	3579999.92370605
1990	7400000.09536743
1991	13699999.8092651
1992	11390000.3433228
1993	8859999.65667725
1994	7650000.09536743
1995	4710000.03814697
1996	6230000.01907349
1997	3140000.10490417
1998	10329999.923706101
1999	6809999.94277954
2000	3849999.90463257
2001	3539999.96185303
2002	1779999.97138977
2003	2579999.92370605
2004	5190000.05722046
2005	2880000.1144409203
2006	4809999.94277954
2007	13439999.5803833
2008	9869999.88555908
2009	15229999.5422363
2010	10670000.076293899
2011	7920000.07629395
2012	11689999.5803833
2013	8510000.22888184
2014	11670000.076293899
2015	10970000.2670288
2016	8689999.5803833
2017	9029999.73297119
2018	12000000
2019	5039999.96185303
2020	2069999.9332428002
2021	4630000.11444092
2022	6090000.15258789