Year	constant 2015 US$
1960	4278.291719649141
1961	4487.16176940063
1962	4679.634474730191
1963	4606.642245980232
1964	4895.0118531601265
1965	5304.317480189692
1966	5646.728648762191
1967	6028.749595798562
1968	6307.414967427692
1969	6652.878383596555
1970	6613.729962202374
1971	6700.9989980642085
1972	6549.5030813291305
1973	6690.163203607695
1974	6240.317476344534
1975	5985.60439286808
1976	6229.7234935576535
1977	6529.743985498089
1978	6944.911231878758
1979	7567.079268330919
1980	7720.505186196554
1981	7530.82613119636
1982	7399.516318724991
1983	7377.783376382803
1984	7778.808745458513
1985	8015.2745927463975
1986	8233.160833384747
1987	8364.123421894274
1988	8653.340044878127
1989	9017.548816519173
1990	8907.266008829525
1991	8772.371959558293
1992	8652.437953350374
1993	8654.827981500885
1994	8860.50513522655
1995	9016.847921113893
1996	9279.503884956439
1997	9490.296979759689
1998	9725.203732695107
1999	10005.147674937802
2000	10270.30880002703
2001	10305.723451797643
2002	10430.632314486838
2003	10527.418024141729
2004	10733.61017748826
2005	10999.837323116462
2006	11402.866618731607
2007	11690.712321222974
2008	11666.03756118334
2009	11279.140466096122
2010	11312.96341631899
2011	11435.49569788453
2012	11618.423596175055
2013	11534.590842492264
2014	11643.151135044096
2015	11629.120774444906
2016	11593.184295773657
2017	11726.779132922551
2018	11902.257941669852
2019	11898.664517569621
2020	10749.76716423645
2021	11787.72060260292
2022	14352.345417057939
2023	16071.752922159261