Year	current US$
1968	1340000.0333786
1969	1360000.01430511
1970	2019999.9809265102
1971	2220000.02861023
1972	1899999.97615814
1973	2339999.91416931
1974	2420000.07629395
1975	3579999.92370605
1976	3269999.98092651
1977	2839999.91416931
1978	3480000.01907349
1979	4480000.01907349
1980	5840000.15258789
1981	6710000.03814697
1982	7719999.79019165
1983	7800000.19073486
1984	6179999.82833862
1985	6539999.96185303
1986	7579999.92370605
1987	5039999.96185303
1988	5449999.80926514
1989	6170000.07629395
1990	8260000.22888184
1991	12579999.923706101
1992	8779999.73297119
1993	5320000.17166138
1994	1759999.9904632599
1995	3700000.04768372
1996	4579999.92370605
1997	7210000.03814697
1998	5309999.94277954
1999	9359999.65667725
2000	6360000.1335144
2001	4489999.771118159
2002	5440000.05722046
2003	6010000.228881841
2004	8890000.34332275
2005	6489999.771118159
2006	5210000.03814697
2007	4099999.90463257
2008	8039999.961853029
2009	11460000.038146999
2010	13020000.4577637
2011	8140000.34332275
2012	7458555.22155762
2013	6643060.20736694
2014	8838396.0723877
2015	7289007.66372681
2016	8361888.885498051
2017	8718194.00787354
2018	10564922.3327637
2019	9443802.83355713
2020	21027353.2867432
2021	15129642.4865723
2022	11857214.9276733