Year	current US$
1965	358679856.5280574
1966	412439835.02406603
1967	391439843.42406267
1968	338519864.5920542
1969	423359830.6560677
1970	410479835.8080657
1971	434559826.17606956
1972	488039804.7840781
1973	580696409.6040125
1974	706630403.7355787
1975	817719017.3612847
1976	1096441685.267017
1977	1297123610.9297318
1978	1594110429.4478528
1979	2121977937.8223505
1980	2454308970.378451
1981	2687685551.9878464
1982	2869001282.298605
1983	3010639557.782191
1984	3094950125.49907
1985	3223820082.3566675
1986	3847516615.8998303
1987	4076712393.5247693
1988	3956803778.8678355
1989	2727402467.210604
1990	2512083554.312714
1991	2687459793.8507724
1992	3075823235.04232
1993	3334916165.236104
1994	3615714899.0983257
1995	3988013698.630137
1996	4248095909.732017
1997	4609449929.478139
1998	4900000000
1999	5100423131.170663
2000	5441889985.895628
2001	5787021691.634355
2002	6138928067.700988
2003	6576868829.337095
2004	7343582510.5782795
2005	8188434414.668548
2006	9606346967.559944
2007	10803526093.088858
2008	13321185851.955917
2009	14656149014.084507
2010	16040224929.577465
2011	17391300140.84507
2012	19067438028.169014
2013	20815430140.84507
2014	22141128591.549297
2015	23206526619.71831
2016	24212344084.507042
2017	25118146619.71831
2018	26229241549.295776
2019	27246062253.52113
2020	26996560422.535213
2021	28168324929.577465
2022	29367027746.478874
2023	30800590386.073242