Year	current US$
1960	1397.5948032844049
1961	1472.3857140786822
1962	1525.775852710321
1963	1613.4568837339225
1964	1748.288117614103
1965	1873.567774354205
1966	1986.747158696848
1967	2058.7818819805584
1968	1951.7585958753211
1969	2100.6678685867173
1970	2347.544317737474
1971	2649.8015138722335
1972	3030.4325141197723
1973	3426.276220503779
1974	3665.862797641903
1975	4299.745617992836
1976	4138.167787615347
1977	4681.43993173038
1978	5976.938168999906
1979	7804.762080511547
1980	10032.062080014974
1981	9599.306222219648
1982	9146.077357018517
1983	8691.51881306514
1984	8179.194440649911
1985	8652.21654247593
1986	10611.112210095978
1987	13118.586534629034
1988	15987.168077568824
1989	16239.282196094424
1990	19095.46699846078
1991	19900.726650506862
1992	20487.170785287846
1993	18389.019567509866
1994	19709.238098365302
1995	23168.95295801709
1996	24406.400298359004
1997	26766.00562496839
1998	28274.504511969917
1999	28762.09135702561
2000	28280.926786099004
2001	27906.569502964052
2002	30077.741432187977
2003	34442.68754023079
2004	40366.888665096805
2005	42104.78843750239
2006	44512.459029686455
2007	50397.6854954706
2008	47396.120207848355
2009	38744.13169304295
2010	39598.95711954499
2011	42109.64187957491
2012	42497.34049743217
2013	43426.29814051428
2014	47439.616589512465
2015	44964.391143729204
2016	40985.23513824167
2017	40572.121482378294
2018	43203.8141057739
2019	42662.535374031075
2020	40217.00901169857
2021	46869.75905841103
2022	45564.15694480128
2023	48866.60396002978