Year	constant 2015 US$
1960	305.78925750742917
1961	309.9466903127045
1962	311.7411949296736
1963	322.88563416938
1964	339.05731411721234
1965	322.82322198444484
1966	315.7759851798831
1967	333.3168932600652
1968	337.21580041711906
1969	351.4400046354494
1970	361.48612181172336
1971	359.3688762890019
1972	349.50808170553665
1973	352.98965597335626
1974	349.19844509829596
1975	372.7127029003836
1976	370.63273450982047
1977	388.8385692394469
1978	402.0547121645354
1979	372.6163021602188
1980	388.82277907106067
1981	402.90151816532773
1982	407.5856196840503
1983	427.5276957576654
1984	433.9316670964
1985	446.5773323489237
1986	457.5653912247561
1987	465.3072241873708
1988	499.08464810793777
1989	517.4203321307461
1990	534.4840995925484
1991	528.8981770453067
1992	546.4410205038383
1993	560.7985717662667
1994	586.1754575650906
1995	618.139287917831
1996	651.9583565837722
1997	665.4661075537269
1998	693.4085047587644
1999	740.9162332873166
2000	755.4822940328286
2001	777.7336603058468
2002	793.1009617922793
2003	840.8180442549802
2004	892.3821034885001
2005	947.7634352801106
2006	1008.6671374074967
2007	1070.1315381413747
2008	1087.5830355440537
2009	1156.880665926642
2010	1238.0147267219343
2011	1285.283048982715
2012	1337.4761107382628
2013	1404.545346470648
2014	1490.0285076296348
2015	1590.174331342972
2016	1701.1842376470752
2017	1795.9118496796978
2018	1891.1384354566346
2019	1944.314848449675
2020	1814.5615697055678
2021	1974.5806023180692
2022	2098.220931246275
2023	2239.2503629525404