Year	current US$
1960	44140000.475570604
1961	35310001.0603666
1962	32840000.852942504
1963	34130000.742152296
1964	34510000.9180605
1965	31229999.4118512
1966	36669999.493286
1967	47870000.082999505
1968	26870000.846684
1969	35089999.7148663
1970	52650001.175701596
1971	51440000.5340576
1972	51009999.6887147
1973	46069999.264553204
1974	44080000.2235919
1975	32799999.6580184
1976	33129999.967292
1977	33100000.4466623
1978	39530000.7145852
1979	32390000.665560402
1980	38169999.722391404
1981	27480000.462383
1982	28399999.9742955
1983	20280000.1762807
1984	20499999.8174608
1985	38950000.2432615
1986	37179999.940097295
1987	33790000.053122595
1988	35620000.217109896
1989	31910000.2944469
1990	163639997.886494
1991	58429999.3719906
1992	-479997.990652919
1993	78629999.74563721
1994	82000000.14528629
1995	76589999.5770305
1996	79259999.293834
1997	218239998.72431198
1998	88449998.8052994
1999	55329999.9907613
2000	67400000.9596348
2001	46039999.2484599
2002	42029999.6938556
2003	27009999.6943027
2004	34270001.2922287
2005	19470000.1999736
2006	-3000000.09685755
2007	-152889998.65576598
2008	8409999.83623624
2009	6320000.04313886
2010	4739999.981597071
2011	1509999.9904632599
2012	8729999.92407858
2013	5539999.93018806
2014	6119999.90418553
2015	16190000.057220502
2016	12229999.6465445
2017	6799999.90202487
2018	2799999.95231628
2019	5050000.01192093
2020	4190000.05722046
2021	3310000.06198883
2022	1069999.9760836356