Year	current US$
1960	37000000
1961	41000000
1962	41500000
1963	44000000
1964	51000000
1965	51000000
1966	57000000
1967	60000000
1968	64500000
1969	74500000
1970	83000000
1971	87500000
1972	96499565.75195412
1973	92999953.50002325
1974	121000000
1975	139000000
1976	174000000
1977	208500000
1978	208500000
1979	246500000
1980	325000000
1981	360500000
1982	379000000
1983	403500000
1984	438000000
1985	476500000
1986	543500000
1987	590500000
1988	561373390.5579399
1989	508620689.6551724
1990	394212062.25680935
1991	332725186.6759456
1992	394878044.3442042
1993	369085802.8575375
1994	330606031.77623445
1995	364442127.2158499
1996	384797297.2972973
1997	412319391.634981
1998	525627769.5716396
1999	608083623.6933798
2000	963618445.9886292
2001	1123757618.2453442
2002	1176816435.1552448
2003	1228042635.0290205
2004	1331349045.6335833
2005	1514543438.0917678
2006	1638034362.9982798
2007	2052262226.7148626
2008	2375834476.933105
2009	2727823615.6463847
2010	2839429270.022387
2011	2845043928.9402175
2012	3001956184.542809
2013	3095710138.151741
2014	3029133339.5403037
2015	3001210972.3435793
2016	3065208882.2526875
2017	3123027107.1538725
2018	3240061134.4445705
2019	3453412706.485687
2020	3657218094.9049425
2021	4411351206.069288
2022	4486411226.32584
2023	4960944281.49465