Year	current US$
1960	14740000
1961	15090000
1962	15090000
1963	16900000
1964	16550000
1965	20120000
1966	16900000
1967	18850000
1968	23550000
1969	20550000
1970	20400000
1971	26156006.7340058
1972	36750300.2063626
1973	13973635.3276719
1974	62572063.7726408
1975	100496676.043954
1976	27282883.5544061
1977	22976165.3992957
1978	58265716.4120948
1979	17528049.9581458
1980	12700000
1981	6910512.8398288
1982	10557048.308227
1983	6490000
1984	5850000
1985	6470000
1986	9000000
1987	8430000
1988	4040000
1989	13350000
1990	28679759.2863951
1991	124416126.678968
1992	188080001.237505
1993	247450000
1994	247126598.204679
1995	268938846.606652
1996	329676783.984631
1997	315505363.434221
1998	276599938.610139
1999	268276095.793113
2000	304956640.973324
2001	287255329.338608
2002	284472829.483164
2003	276387312.120453
2004	231844788.060818
2005	251872586.363899
2006	279636390.847379
2007	313007749.406008
2008	355913639.674072
2009	631410304.731452
2010	782063529.783998
2011	801777696.093639
2012	864028135.128365
2013	783621040.872284
2014	667925088.815999
2015	531887027.917001
2016	580981472.737257
2017	565363504.401139
2018	518509369.454311
2019	573446281.433525
2020	680634183.680422
2021	790784502.119024
2022	917877051.389658
2023	895275181.194153