Year	current US$
1960	288884368.01693445
1961	322053713.1587309
1962	360698412.6984135
1963	383904761.9047627
1964	408349206.34920716
1965	443587301.5873024
1966	465888888.8888897
1967	492674603.1746048
1968	517650793.6507952
1969	556293650.7936524
1970	594611111.1111127
1971	664571428.5714301
1972	769039682.539685
1973	995531746.031746
1974	1333475396.8253968
1975	1511420634.9206426
1976	1698960317.4603252
1977	2092158730.158738
1978	2559857142.8571506
1979	3416777777.7777853
1980	4448087301.587317
1981	5624515873.015888
1982	5419411764.705896
1983	5673248726.164398
1984	4502462807.139926
1985	3282449235.761289
1986	3723993942.790897
1987	3971044723.8024096
1988	4255683528.333345
1989	4757732199.962137
1990	5812114523.0118885
1991	6984367762.903712
1992	7157424031.060454
1993	7249533620.30614
1994	7870982004.819505
1995	9062131475.023178
1996	9788391780.52421
1997	9965225678.05093
1998	9260481572.42462
1999	8837070235.51892
2000	8855705139.558565
2001	8495806432.1846695
2002	7196260656.845559
2003	7691367471.179918
2004	9624440836.293095
2005	10737500188.112309
2006	13429430050.260954
2007	17856393235.433792
2008	24615267663.54557
2009	22355151161.99399
2010	27260886405.226337
2011	33756238766.500004
2012	33271921136.314976
2013	38501122141.424126
2014	40377929295.64187
2015	36211447840.09714
2016	36089700222.946144
2017	38997129473.55579
2018	40225448340.632164
2019	37925338329.149445
2020	35432178068.18139
2021	39950899938.74815
2022	41952910858.08456
2023	42956263543.948166