Year	current US$
1973	479999.989271164
1974	949999.988079071
1975	340000.00357627904
1976	50000.0007450581
1977	50000.0007450581
1978	939999.997615814
1979	1240000.0095367401
1980	889999.985694885
1981	1230000.01907349
1982	7250000
1983	4340000.15258789
1984	9729999.54223633
1985	2180000.0667572
1986	3789999.96185303
1987	2099999.90463257
1988	4130000.11444092
1989	4840000.15258789
1990	8789999.96185303
1991	7579999.92370605
1992	7699999.80926514
1993	5369999.88555908
1994	9579999.92370605
1995	11310000.4196167
1996	12460000.038146999
1997	13479999.5422363
1998	7210000.03814697
1999	5980000.01907349
2000	5670000.07629395
2001	8819999.69482422
2002	14640000.3433228
2003	12069999.6948242
2004	11850000.3814697
2005	14869999.8855591
2006	17000000
2007	22799999.237060502
2008	21479999.5422363
2009	24290000.915527303
2010	19020000.4577637
2011	27000000
2012	27979999.5422363
2013	19209999.084472697
2014	17270000.4577637
2015	12640000.3433228
2016	13260000.2288818
2017	11020000.4577637
2018	11800000.1907349
2019	12550000.1907349
2020	12039999.961853001
2021	11319999.6948242
2022	12960000.038146999