Year	current US$
1960	8000000
1961	9000000
1962	7000000
1963	7000000
1964	7000000
1965	7130000.11444092
1966	11329999.923706101
1967	10109999.6566772
1968	10239999.7711182
1969	15000000
1970	21000000
1971	13000000
1972	7000000
1973	17000000
1974	18000000
1975	13000000
1976	14000000
1977	14000000
1978	24000000
1979	29000000
1980	79000000
1981	14000000
1982	6000000
1983	3000000
1990	97000000
1991	379000000
1992	154000000
1993	38000000
1994	60000000
1995	29000000
1996	30000000
1997	41000000
1998	65480003.356933594
1999	64180000.305175796
2000	72769996.6430664
2001	100559997.558594
2002	66720001.220703095
2003	69629997.253418
2004	69650001.5258789
2005	102610000.61035201
2006	67529998.7792969
2007	76529998.7792969
2008	103529998.77929701
2009	89339996.3378906
2010	49360000.6103516
2011	59590000.1525879
2012	43880001.0681152
2013	39259998.3215332
2014	25680000.3051758
2015	40939998.626709
2016	43180000.3051758
2017	51000000
2018	44569999.6948242
2019	30920000.0762939
2020	30909999.8474121
2021	40299999.237060495
2022	31639999.3896484