Year	current US$
1960	829687897.5131876
1961	868779910.4477612
1962	897632950.6370474
1963	840513655.5555556
1964	993450322.2222222
1965	988000000
1966	797629629.6296296
1967	1040898343.5240268
1968	1075946647.6794934
1969	1122811271.4110048
1970	1363951811.409549
1971	1201607360.5474257
1972	1611445714.2595818
1973	2117836218.8556616
1974	2519214019.0394335
1975	2462307008.3259234
1976	3177806600.374694
1977	4365179935.933345
1978	4911318582.938995
1979	5566379855.364374
1980	6576442046.351074
1981	6206789602.343217
1982	6316344650.452986
1983	6627613099.578353
1984	7033144047.412404
1985	7091716521.035482
1986	8681468417.714743
1987	8740970467.839512
1988	9575419999.044033
1989	9552590437.170824
1990	11269320670.569029
1991	11796282403.402681
1992	11667221178.016502
1993	12718923370.21885
1994	16028684637.162146
1995	17915543408.606686
1996	16035900243.338343
1997	16008894207.133686
1998	13624462799.78093
1999	11582096592.225435
2000	14041258001.636599
2001	12673196439.93246
2002	13614509102.60549
2003	14496045818.539198
2004	20045135736.30854
2005	26463815419.567062
2006	30343917453.33404
2007	39640757347.47328
2008	50374083238.44972
2009	45750869608.221466
2010	58175958630.80339
2011	73954419589.65839
2012	77444436293.52657
2013	77827807340.70132
2014	75429825021.67502
2015	49052410561.61712
2016	46363396835.942986
2017	51791861054.94438
2018	55009568498.836845
2019	50257765900.519135
2020	32758452244.20285
2021	35839810123.15215
2022	41905278049.31321
2023	28532816680.37