Year	constant 2015 US$
1960	4197.982290390945
1961	4269.984017813828
1962	4325.436004185289
1963	4524.189430553108
1964	4897.244435813231
1965	5072.631360426434
1966	5206.1536227925735
1967	5332.747672697678
1968	5648.053472733677
1969	5655.997551615491
1970	5835.131021161918
1971	5867.034526844776
1972	6154.647455804077
1973	6435.961404778276
1974	6602.411236014255
1975	6773.990304460566
1976	6867.222049725995
1977	6893.666951964957
1978	7293.083895002555
1979	7776.166014118606
1980	8240.716123797189
1981	8831.274014636761
1982	8649.122943590422
1983	8086.261962984193
1984	8209.843518017064
1985	8212.921774950406
1986	7750.171488591937
1987	7774.519869918389
1988	7735.721510090813
1989	7882.123111412427
1990	8145.016154624864
1991	8303.1211884822
1992	8433.337037102481
1993	8509.396155838798
1994	8715.733768721291
1995	8049.743232076018
1996	8399.342548414044
1997	8849.732076575287
1998	9240.007193234635
1999	9340.079874655527
2000	9655.602498557582
2001	9464.995025831466
2002	9300.11740023791
2003	9271.440319971409
2004	9461.92375619686
2005	9524.742437049705
2006	9847.51282216971
2007	9920.687841222085
2008	9888.139444764569
2009	9151.769566531828
2010	9480.135308309817
2011	9667.626646107798
2012	9872.292522087
2013	9826.132388590653
2014	9947.88602513395
2015	10098.173182095032
2016	10161.355709478245
2017	10240.310427569493
2018	10343.353430290752
2019	10228.980944107032
2020	9279.049495525927
2021	9756.858621794549
2022	10078.602541946602
2023	10326.953853298795