Year	constant 2015 US$
1960	10280.857263808592
1961	10609.595403563497
1962	11066.759621870258
1963	11485.982638415016
1964	12073.438494140233
1965	12593.905409599627
1966	13154.295669643074
1967	13524.548576768755
1968	14185.593468931236
1969	14839.554197719744
1970	15144.15014418909
1971	15574.068291849602
1972	16280.206284669706
1973	17150.696628333342
1974	17193.274842560884
1975	17010.110126876018
1976	17714.62393131753
1977	18257.69320080893
1978	18866.673993097127
1979	19478.595955426903
1980	19573.257546227655
1981	19795.395319177256
1982	19601.646914311445
1983	20014.65174189098
1984	20813.84447659648
1985	21408.580169960995
1986	21962.60366117411
1987	22581.240168556986
1988	23484.17543490121
1989	24221.922132639043
1990	24715.47502806485
1991	24756.457530915573
1992	24948.817026344594
1993	25045.34973743934
1994	25609.760591100963
1995	26151.596706330187
1996	26756.25736767764
1997	27534.138261809894
1998	28135.989895184553
1999	28980.20900815426
2000	30069.198194122662
2001	30401.313737337903
2002	30748.645451852783
2003	31306.643932111365
2004	32244.287542091864
2005	33028.032391632485
2006	33881.1491893063
2007	34609.22473291024
2008	34591.30707459399
2009	33204.07618129766
2010	34025.79680254465
2011	34578.95300385875
2012	34908.35032372868
2013	35278.01704320501
2014	35840.91610506872
2015	36482.996526046736
2016	36955.7867915663
2017	37694.6802627023
2018	38420.017589381554
2019	38982.240490425655
2020	37327.80681829798
2021	39440.24119917181
2022	40395.78760674303
2023	40852.72753804801