Year	current US$
1960	23000000
1961	10000000
1962	23000000
1963	8000000
1964	49000000
1965	44220001.220703095
1966	9020000.45776367
1967	17569999.6948242
1968	25409999.8474121
1969	24000000
1970	19000000
1971	30000000
1972	47000000
1973	64000000
1974	46000000
1975	63000000
1976	60000000
1977	86000000
1978	67000000
1979	54000000
1980	50000000
1981	51000000
1982	58000000
1983	138000000
1984	129000000
1985	135000000
1986	367000000
1987	230000000
1988	121000000
1989	192000000
1990	248000000
1991	224000000
1992	229000000
1993	262000000
1994	116000000
1995	112000000
1996	46000000
1997	15000000
1998	27329999.9237061
1999	72690002.44140631
2000	75459999.0844727
2001	82989997.8637695
2002	78620002.746582
2003	55290000.9155273
2004	79449996.9482422
2005	96760002.1362305
2006	97819999.6948242
2007	84790000.9155273
2008	71260002.1362305
2009	89500000
2010	113449996.94824201
2011	113430000.30517599
2012	121730003.35693401
2013	153080001.831055
2014	253460006.71386698
2015	250250000
2016	240059997.55859402
2017	138990005.493164
2018	104919998.168945
2019	128279998.779297
2020	137919998.168945
2021	159190002.44140598
2022	147660003.66210902