Year	current US$
1960	7200000
1961	8000000
1962	10000000
1963	10000000
1964	10800000
1965	14600002
1966	12034285.714285715
1967	11660000
1968	14100000
1969	12500000
1970	15500000
1971	20359585.788940918
1972	23560066.228760652
1973	27406401.18205
1974	32265523.750114273
1975	78567572.87794404
1976	88133134.22878018
1977	112471862.6165297
1978	150411381.28305984
1979	133462977.75608175
1980	202523981.02432752
1981	187126463.1302059
1982	250182786.97648796
1983	200210347.30235577
1984	250915628.57430074
1985	296963776.987334
1986	308719217.99836844
1987	337953447.39817756
1988	347165264.7198011
1989	322898696.2254216
1990	373601773.9537675
1991	268039805.58409935
1992	317220023.8970723
1993	330171822.530916
1994	75231818.63636364
1995	173451854.3689586
1996	198647416.0745714
1997	255696103.18172947
1998	294575250.8663618
1999	258278461.01372725
2000	254285261.1855081
2001	251417689.57852277
2002	248032460.09594306
2003	281583915.33604264
2004	341198963.02530617
2005	444390385.04356045
2006	498801635.56852216
2007	683434651.8452157
2008	1105623913.8906245
2009	1192502727.0825205
2010	1257566697.288722
2011	1439043222.0873835
2012	1783875534.7389226
2013	1910507611.7011735
2014	1913831560.9129505
2015	2071091362.8157492
2016	2251713715.375582
2017	2205415809.8875804
2018	2151391475.071113
2019	2797282038.5378113
2020	2414856489.815304
2021	2985293308.4421916
2022	3427822526.51949
2023	3282792247.6562166