Year	current US$
1960	1483.0036818220738
1961	1581.3039796340443
1962	1680.4948494579337
1963	1792.4222742874697
1964	1921.4372350518188
1965	2073.8296906623114
1966	2246.8494544781693
1967	2466.520088442717
1968	2688.9442557798675
1969	3057.322961023247
1970	3005.7843994697387
1971	3108.9543741697616
1972	3123.463772789022
1973	3466.054979515713
1974	3197.7023467009158
1975	2953.2249196308717
1976	3115.538389876562
1977	3386.626388136833
1978	3871.3398072701566
1979	5194.462370001732
1980	5967.767885873646
1981	6257.786590394638
1982	6797.830965168815
1983	7324.186553726763
1984	8463.464999212161
1985	9436.23274442434
1986	9858.295720961389
1987	10617.405268799537
1988	10819.268041712101
1989	11533.260763937278
1990	11696.511365861408
1991	11269.950517644842
1992	11025.878364240549
1993	10730.000971668911
1994	11085.14712735164
1995	11447.017899944583
1996	11835.386789884991
1997	20415.706174980896
1998	21665.387859149392
1999	23991.70080431633
2000	24849.606478490157
2001	25234.144151250206
2002	26590.140178801325
2003	26204.88049868534
2004	26393.413953813735
2005	28280.870835298043
2006	28829.849375042533
2007	29687.86521503302
2008	29013.630287076725
2009	27120.690545214464
2010	27046.657665187853
2011	26644.926577589627
2012	28059.65539534263
2013	26956.566835213278
2014	28201.556802207997
2015	29722.406842934884
2016	29661.14107925733
2017	30666.8838654704
2018	31389.92699785522
2019	32173.958181418195
2020	24499.164762061748
2021	27871.372325977063
2022	32041.25039025913
2023	34749.638289673625