Year	current US$
1960	525941953.99635506
1961	445918427.1801638
1962	360296678.6990969
1963	436388324.51744384
1964	552893895.0357221
1965	581601587.1602497
1966	543738450.7178938
1967	584878156.6370292
1968	474029059.9197015
1969	699740175.5440856
1970	559903193.6297487
1971	616913501.5672507
1972	740853869.0032525
1973	798798624.5411552
1974	1626267982.363552
1975	1590779983.6121502
1976	1914372984.659652
1977	2700316451.580307
1978	3171772278.9216037
1979	3229845095.8008885
1980	4537411420.070213
1981	5632924170.677754
1982	4337694755.788022
1983	3544736928.9889855
1984	3176479533.6966405
1985	3250027763.29862
1986	3609365886.259518
1987	3543197191.4547067
1988	3407860365.11489
1989	3763012482.979347
1990	3668398162.719943
1991	3745199599.7998996
1992	4101973986.9934964
1993	3991794897.4487243
1994	4833829914.957479
1995	4843761880.94047
1996	4676422211.105553
1997	5719415707.853927
1998	6714440220.110055
1999	3856065032.516258
2000	3010989494.7473736
2001	4276495000
2002	5317844000
2003	4884166000
2004	5719291000
2005	7034500000
2006	8278311000
2007	9131070000
2008	13185295000
2009	12724051000
2010	16008758000
2011	18587210000
2012	20190733000
2013	24029937000
2014	25377346000
2015	22053384000
2016	19774608000
2017	23484696000
2018	24226230000
2019	22648097000
2020	16857860000
2021	22531979000
2022	25991251000
2023	25490476000