Year	current US$
1965	1271515945.8278725
1966	1313403842.0030217
1967	1354046881.910659
1968	1505607476.635514
1969	1666585956.416465
1970	1938960060.2863603
1971	1974241264.9834225
1972	2208634953.4643226
1973	2683678625.568469
1974	2658632869.312279
1975	3218106093.8185005
1976	3464150943.396227
1977	3574109805.297316
1978	3465130382.0497274
1979	3614285571.4285717
1980	3593274020.5555553
1981	4785945945.945946
1982	4991379310.344828
1983	5897555296.856811
1984	6151365297.785422
1985	6679928803.266674
1986	7173994387.27783
1987	7942654831.10762
1988	6312322714.3668375
1989	7432362556.794713
1990	7956482772.543741
1991	6350947357.926222
1992	6523636144.7958355
1993	7331032412.965186
1994	8155397390.272836
1995	9451489236.213507
1996	10898584905.660378
1997	12354572271.38643
1998	13474616292.798111
1999	14430846358.006487
2000	15512989872.302952
2001	14842318059.299192
2002	13116629213.483145
2003	12273461538.461538
2004	11242207792.207792
2005	12527653910.149752
2006	14220208695.652174
2007	17504921190.89317
2008	20564327272.727272
2009	24585226860.254086
2010	29214083484.573505
2011	32729655765.92083
2012	31464163766.666668
2013	32519065550.387596
2014	34647507446.19799
2015	37528228894.87871
2016	39126121619.6319
2017	27286079279.891304
2018	28439002982.554867
2019	34089504498.86105
2020	42860262451.653145
2021	48569423645.63416
2022	52183630172.67617
2023	41969395948.685074