Year	constant 2015 US$
1960	16651.93662577462
1961	17515.276048614516
1962	18160.819938295772
1963	19020.905452681807
1964	20167.116468823144
1965	20741.528336248553
1966	20974.66095127789
1967	21514.83706489136
1968	22172.69499685146
1969	23120.292832993182
1970	24388.2982101309
1971	24449.862775374433
1972	24935.662316189755
1973	25880.457618271066
1974	26630.779915101895
1975	27202.343886370538
1976	27390.37685765145
1977	26857.599201599798
1978	27248.574338554055
1979	28233.241769196222
1980	28654.971063496523
1981	28750.803827611722
1982	29093.161321042156
1983	29632.698384871223
1984	30857.97054411828
1985	31472.59160957492
1986	32244.542717244643
1987	33214.957632382706
1988	33908.73855375763
1989	34577.48373453249
1990	34570.30573399395
1991	33941.98518191017
1992	33352.5383635834
1993	32474.429914667056
1994	33511.648722448095
1995	34648.11891545751
1996	35139.40299161076
1997	36197.63420648071
1998	37737.46227538247
1999	39309.59700165186
2000	41117.15243035042
2001	41601.30767828472
2002	42377.11963797502
2003	43194.92616840472
2004	44891.32320639702
2005	45990.374326398385
2006	47864.81086423089
2007	49145.19583324119
2008	48544.1158941036
2009	46043.480944999355
2010	48369.91004078761
2011	49539.97260764923
2012	48885.54841797249
2013	49048.81875002379
2014	49855.30101231298
2015	51545.48360953215
2016	51955.86107036343
2017	52576.81028210514
2018	52983.00686174822
2019	53490.35181987459
2020	51952.67313283421
2021	54816.005848572975
2022	55894.161942414736
2023	55521.43275277486