Year	current US$
1960	726263484.7459824
1961	566839799.3947816
1962	389702373.47733265
1963	513698597.9510073
1964	495984816.87482023
1965	513698597.9510073
1966	536033327.52690876
1967	603037455.4897044
1968	647706914.6415073
1969	714711062.8592726
1970	804049940.6529392
1971	942721588.68616
1972	1181305564.2041152
1973	1391394209.9611483
1974	1556133181.8453627
1975	2233607720.4482293
1976	2436375952.3995366
1977	3084595652.796715
1978	4059382939.5597467
1979	5007925612.214258
1980	6436566026.918918
1981	6696312648.75546
1982	7316767243.18147
1983	7914300304.878049
1984	8608623834.248878
1985	9686144675.603643
1986	12100418113.02811
1987	12969761834.753271
1988	11885506276.071398
1989	10015038526.35414
1990	9969290655.392101
1991	6728784842.6409
1992	7689110996.3672495
1993	8652665905.546217
1994	7604432534.066416
1995	7001278082.557048
1996	7404710415.086993
1997	7967795862.915091
1998	8573526086.3837595
1999	8165423749.180891
2000	7442697954.838886
2001	8975106022.440893
2002	9736954063.595371
2003	11109881487.783928
2004	12837459027.54071
2005	13300929408.179243
2006	14710347764.714218
2007	17650997800.6246
2008	24831208928.693085
2009	24609298910.1044
2010	30158222147.8474
2011	43912900515.63465
2012	44861554380.304565
2013	42575344847.57158
2014	45383055491.97752
2015	38482111978.682434
2016	36192251447.04689
2017	35752754203.303314
2018	33859701552.549213
2019	35327719346.24689
2020	32650145767.995407
2021	33998477763.200367
2022	36933412608.43913
2023	40612482947.49349