Year	current US$
1968	4130000.11444092
1969	2920000.07629395
1970	3289999.96185303
1971	4250000
1972	5300000.19073486
1973	4760000.228881841
1974	2819999.9332428
1975	3460000.03814697
1976	2559999.94277954
1977	1620000.00476837
1978	4179999.8283386203
1979	5150000.09536743
1980	6150000.09536743
1981	6170000.07629395
1982	4139999.8664856004
1983	3930000.0667572
1984	3799999.95231628
1985	3309999.94277954
1986	3640000.10490417
1987	4960000.03814697
1988	3549999.95231628
1989	3670000.07629395
1990	2619999.8855590797
1991	1809999.9427795399
1992	1730000.01907349
1993	1389999.98569489
1994	389999.98569488496
1995	569999.992847443
1996	670000.016689301
1997	769999.980926514
1998	519999.980926514
1999	1190000.0572204601
2000	649999.976158142
2001	680000.007152557
2002	839999.973773956
2003	970000.028610229
2004	1070000.05245209
2005	990000.009536743
2006	1269999.98092651
2007	1049999.95231628
2008	800000.011920929
2009	579999.983310699
2010	680000.007152557
2011	419999.986886978
2012	722713.649272919
2013	1262042.99926758
2014	470484.405755997
2015	994879.305362701
2016	394518.435001373
2017	349409.967660904
2018	350000.530481339
2019	351639.986038208
2020	549163.75875473
2021	450584.650039673
2022	907251.834869385