Year	current US$
1960	27400000
1961	44700000
1962	52350000
1963	65750000
1964	66210000
1965	83710000
1966	98210000
1967	103460000
1968	140890000
1969	161930000
1970	193960000
1971	268673758.227429
1972	303292052.56869
1973	288659617.613197
1974	250082212.660735
1975	197653412.483615
1976	274501705.579349
1977	313482887.136416
1978	345682925.572166
1979	353064140.929594
1980	368341198.388314
1981	426380724.915591
1982	523176497.192786
1983	519077736.486497
1984	540546193.360694
1985	595272407.732865
1986	752749024.50063
1987	873522372.285037
1988	927898468.598189
1989	1123986369.49037
1990	1506924390.03571
1991	1390176236.24998
1992	1027876381.53643
1993	1096651838.57738
1994	1464515306.64829
1995	1116875435.54007
1996	1541940176.17826
1997	1391576187.88049
1998	1379720440.99322
1999	1832872221.58934
2000	1741088338.45376
2001	2267765101.36782
2002	3022048009.38615
2003	3256744504.51066
2004	3910022637.25478
2005	4191125666.75242
2006	5646762927.32535
2007	6118598612.54211
2008	616838047.280455
2009	796220251.305647
2010	514865898.066764
2011	504296352.562897
2012	448941645.630353
2013	379054841.409657
2014	354808213.595586
2015	334048870.831618
2016	300271286.049062
2017	308156948.704109
2018	351303991.467494
2019	352682563.891381
2020	392004647.356027
2021	797459860.409885
2022	860434604.091731
2023	867338486.180804