Year	constant 2015 US$
1960	948.0428478685068
1961	961.0753035801654
1962	968.9216710633882
1963	1005.4254659600992
1964	1044.5389776082102
1965	1055.0814552489792
1966	1056.5049930796392
1967	1045.3187820501378
1968	1096.5530809416155
1969	1070.7034869314211
1970	1079.530846899496
1971	1018.2051812511221
1972	1047.2750200578519
1973	1126.8596592785518
1974	1071.2000784248944
1975	1081.1078413127766
1976	1209.3428560618117
1977	1335.6011740028682
1978	1330.6563155139186
1979	1273.3246937292126
1980	1331.061683258551
1981	1300.2687455102953
1982	1286.0870109856667
1983	1229.5158200839262
1984	1282.3578919310341
1985	1249.366949225179
1986	1285.037514959924
1987	1267.9966800474367
1988	1258.58744946315
1989	1288.4296535204717
1990	1257.1935106750866
1991	1283.510717640354
1992	1275.1011701362922
1993	1294.1971795780628
1994	1264.3102546466603
1995	1250.3565996525112
1996	1279.614773913606
1997	1283.81980527172
1998	1306.768926172179
1999	1261.6601867115792
2000	1310.594537857488
2001	1333.8061365904978
2002	1353.5669222242125
2003	1377.4510749174867
2004	1410.4821505981295
2005	1461.2130483025358
2006	1551.1625644631433
2007	1608.1188792266457
2008	1619.9892420580231
2009	1586.7538598914439
2010	1610.857402660151
2011	1635.6479303367632
2012	1672.6183507106214
2013	1703.0409994500856
2014	1714.5697895773242
2015	1749.5225128394334
2016	1787.5130476956485
2017	1848.066956872974
2018	1917.2791140470151
2019	1975.1655816111931
2020	1794.919534700075
2021	2065.0927761654993
2022	2151.2252289659477
2023	2221.216764129164