Year	constant 2015 US$
1960	11169.647238321833
1961	11598.679525639036
1962	12257.759306674756
1963	12884.017039003376
1964	13587.671670052574
1965	14089.584552868648
1966	14670.500507532577
1967	15234.36469607173
1968	15767.28333900401
1969	16738.1676713016
1970	17605.63896915232
1971	18377.868910037327
1972	19041.78972664893
1973	20091.194013855955
1974	20813.444898837955
1975	20498.348081583958
1976	21291.988987841985
1977	21925.83240166853
1978	22687.611506900408
1979	23378.294993221167
1980	23618.399617471816
1981	23733.593565543415
1982	24187.09476686425
1983	24356.659291812786
1984	24600.992355863385
1985	24870.50582014095
1986	25319.315094538706
1987	25830.23897678472
1988	26912.181206405414
1989	27938.46975672474
1990	28617.44357011508
1991	28664.131878335167
1992	28977.888902540548
1993	28670.886328678174
1994	29237.535511327973
1995	29745.12872894942
1996	30057.96555333452
1997	30650.74447652533
1998	31633.147749576878
1999	32546.934052218698
2000	33592.46683005729
2001	34009.86239773676
2002	34146.30626832431
2003	34183.66334445382
2004	34893.5298119974
2005	35208.855797142955
2006	35821.871994777255
2007	36464.95926821575
2008	36354.65866410805
2009	35129.36223608584
2010	35638.12156034508
2011	36244.18716259184
2012	36182.151127581645
2013	36203.19086937741
2014	36378.61866146991
2015	36652.92230521776
2016	36956.79580032932
2017	37694.08330273043
2018	38259.697769847415
2019	38832.02420143027
2020	35806.61789177725
2021	38002.194236225216
2022	38816.47927956431
2023	38975.57661572359