Year	current US$
1973	3000000
1974	9680000.30517578
1979	5750000
1980	3450000.04768372
1981	3920000.07629395
1982	6590000.15258789
1983	2839999.91416931
1984	8539999.96185303
1985	7630000.11444092
1986	5079999.92370605
1987	7650000.09536743
1988	11680000.3051758
1989	7059999.94277954
1990	115379997.253418
1991	64849998.474121094
1992	86190002.44140631
1993	32029998.779296905
1994	11279999.7329712
1995	8329999.923706049
1996	10430000.3051758
1997	8239999.77111816
1998	6469999.79019165
1999	-2640000.10490417
2000	-10939999.5803833
2001	-10270000.4577637
2002	-7110000.1335144
2003	-4059999.94277954
2004	-509999.99046325695
2005	1990000.0095367401
2006	64919998.1689453
2007	5159999.84741211
2008	-2859999.89509583
2009	-11710000.038146999
2010	-13569999.6948242
2011	-12609999.6566772
2012	-10310000.4196167
2013	4920000.07629395
2014	10979999.5422363
2015	9720000.26702881
2016	10090000.1525879
2017	12600000.3814697
2018	20030000.6866455
2019	6619999.88555908
2020	7969999.79019165
2021	15260000.2288818
2022	34099998.4741211