Year	constant 2015 US$
1960	9964.30524629789
1961	10446.126334097435
1962	10952.105769976615
1963	11389.503763873841
1964	11954.384427574532
1965	12447.212986856368
1966	12887.909844916592
1967	13238.029459971656
1968	13890.197144497994
1969	14778.141432714057
1970	15517.87131164041
1971	16012.863057517672
1972	16682.436733071496
1973	17597.178900294257
1974	18061.81360198518
1975	17832.954358776547
1976	18648.064141882372
1977	19145.92362142459
1978	19661.32060358803
1979	20336.583844622983
1980	20683.60254475157
1981	20709.270664760574
1982	20796.426430599997
1983	21041.9386511549
1984	21506.911571218356
1985	21963.07890098583
1986	22458.818223351285
1987	22965.595618317755
1988	23876.31602706277
1989	24751.563368653122
1990	25528.781341633945
1991	25992.723899292534
1992	26170.476230463875
1993	25871.471076026686
1994	26424.432136130596
1995	27003.393971054367
1996	27399.66503993712
1997	28081.088738268805
1998	28872.833236292932
1999	29650.400145298012
2000	30699.95837136653
2001	31272.49745660674
2002	31420.526823045046
2003	31472.22757852744
2004	32022.26949340399
2005	32398.28102476771
2006	33293.90527768064
2007	34121.347119024285
2008	34101.42200792762
2009	32451.434399465343
2010	33077.53929373755
2011	33718.37600889689
2012	33360.08673865103
2013	33176.48223482089
2014	33528.404568613245
2015	34118.36594186635
2016	34657.58733812178
2017	35497.86704181343
2018	36051.23185935638
2019	36586.02350576889
2020	34306.71946291252
2021	36354.44808876684
2022	37450.106599012055
2023	37399.93492882036