Year	constant 2015 US$
1960	321.09997341064076
1961	336.9796323827497
1962	350.69761170958645
1963	327.64778376466245
1964	321.1346017041474
1965	320.73041471720995
1966	308.7114406121176
1967	327.4559353479152
1968	347.9641068565973
1969	358.5328564003461
1970	358.838543942813
1971	365.0147449202462
1972	379.5327336463037
1973	380.0101181685216
1974	421.6513357988735
1975	428.1350937824714
1976	443.5438360197972
1977	461.613085281443
1978	487.0865546595414
1979	537.7609975469816
1980	592.003257641342
1981	674.2852355191753
1982	684.4863064451432
1983	719.1606395947239
1984	727.9403834727713
1985	718.7392571856459
1986	722.1440081746736
1987	731.4177044258139
1988	746.0506118460222
1989	760.2278204264513
1990	823.1464689437036
1991	868.3702557457004
1992	878.0117414090182
1993	913.782406846287
1994	969.1773235687928
1995	1073.455976733245
1996	1158.892715836705
1997	1229.6524087784207
1998	1135.8878470652205
1999	1170.8211569180191
2000	1172.2687098035067
2001	1196.2416952184035
2002	1225.1831511659113
2003	1255.9599944073125
2004	1301.6665166704915
2005	1336.1737265589882
2006	1360.7783517163036
2007	1410.2863208972494
2008	1466.3224390537575
2009	1518.1433053589487
2010	1570.3230227559895
2011	1629.1942651025283
2012	1697.6069590933096
2013	1769.0147027567991
2014	1841.013667933828
2015	1908.8237692110574
2016	1983.9940770689848
2017	2061.972150210776
2018	2147.047958583135
2019	2236.7779747808263
2020	2158.923427721881
2021	2186.9774103606987
2022	2280.7893771998165
2023	2375.4467999551975