Year	current US$
1969	-2059999.94277954
1970	7199999.80926514
1971	10380000.1144409
1972	18100000.3814697
1973	23329999.9237061
1974	26629999.1607666
1975	84400001.5258789
1976	29309999.4659424
1977	38939998.626709
1978	44029998.779296905
1979	37849998.4741211
1980	40700000.762939505
1981	28760000.2288818
1982	14210000.038146999
1983	28520000.4577637
1984	17639999.3896484
1985	23389999.3896484
1986	17200000.762939498
1987	23430000.3051758
1988	59979999.5422363
1989	39020000.4577637
1990	44090000.1525879
1991	45470001.220703095
1992	43979999.5422363
1993	26280000.6866455
1994	28280000.6866455
1995	23159999.8474121
1996	6059999.94277954
1997	24420000.0762939
1998	12279999.7329712
1999	21379999.1607666
2000	27000000
2001	18360000.6103516
2002	9430000.30517578
2003	2490000.00953674
2004	8529999.73297119
2005	9670000.07629395
2006	9609999.65667725
2007	7530000.20980835
2008	5090000.15258789
2009	2809999.94277954
2010	2980000.01907349
2011	1580000.04291534
2012	492168.87354850804
2013	-27899.9991714954
2014	205190.002918243
2015	93815.99724292761
2020	61650.931835174604
2021	32310.001552104997
2022	581068.634986877