Year	constant 2015 US$
1960	11478.923049201567
1961	11909.059473775698
1962	12591.974483238502
1963	13239.125780605571
1964	13995.365136885497
1965	14503.665422770933
1966	15080.210338665493
1967	15667.18219011983
1968	16186.376914766472
1969	17162.44040241271
1970	18019.288810732774
1971	18832.982804590923
1972	19558.54465279404
1973	20658.338084558156
1974	20794.590662616883
1975	20657.797790424946
1976	21417.668508358034
1977	21955.038715378058
1978	22923.108837585416
1979	23579.416829759815
1980	23546.92732296939
1981	23342.114102523145
1982	23703.899416050586
1983	23836.592472652705
1984	23939.09011162045
1985	24352.41606147534
1986	25429.62496382057
1987	26036.637426477268
1988	27218.982041911473
1989	28084.700003049515
1990	28787.045927991152
1991	28750.656660518285
1992	29133.40595891934
1993	28919.270832369908
1994	29399.978027183835
1995	29835.33029198153
1996	30230.26710160063
1997	30935.19853775618
1998	32037.138501524314
1999	33193.16230903266
2000	33875.60761373397
2001	34387.576711493086
2002	34403.87357039112
2003	34518.02034864344
2004	35167.346920067685
2005	35470.47432684534
2006	36036.555685614636
2007	36800.37882561511
2008	36685.68546618002
2009	35750.71698670446
2010	36131.30760546755
2011	36598.43829628279
2012	36332.35035811774
2013	36504.19149589539
2014	36800.94587041218
2015	37444.473188886135
2016	37858.79308905092
2017	38509.412846279585
2018	38965.01425824788
2019	39592.18295502382
2020	36140.32372184427
2021	38853.55498793383
2022	38963.760855251945