Year	current US$
1964	322377124.1830065
1965	314845938.3753501
1966	325210084.03361344
1967	330110497.23756903
1968	301440576.23049223
1969	319447779.1116447
1970	352100840.3361345
1971	360048134.77737665
1972	398252184.76903874
1973	418259803.92156863
1974	483508771.9298246
1975	597455752.2123893
1976	532973944.294699
1977	612565445.026178
1978	760362941.7383
1979	922705771.0501418
1980	1091047619.047619
1981	1088524590.1639342
1982	1253510895.8837771
1983	962281167.1087533
1984	968645418.3266932
1985	853474695.7204556
1986	418580648.76957494
1987	534941100.96055
1988	841698954.2966106
1989	797017345.7275175
1990	560675092.1120399
1991	677422959.701998
1992	632030436.5238286
1993	742583259.9118943
1994	797676836.5433782
1995	890617055.0847458
1996	976303899.2071251
1997	886811003.5659704
1998	685127909.9513942
1999	707795698.9247311
2000	764091104.6317098
2001	1171996274.292619
2002	1357114816.5793233
2003	1465054303.84599
2004	1464240180.6537595
2005	1634965261.4836442
2006	1825050668.3358605
2007	2119737262.6027322
2008	2529149107.081467
2009	2532846189.0626616
2010	2232666756.659671
2011	2862692996.9497576
2012	3477682515.668601
2013	5729147889.012784
2014	5415217704.598292
2015	4781426615.445232
2016	4210581833.848972
2017	3870070575.502625
2018	4368329746.009397
2019	4368654919.7849865
2020	4439738972.629197
2021	4817258393.062837
2022	4610450858.328617
2023	4383926191.3536005