Year	constant 2015 US$
1960	597.1474028395244
1961	614.5041290062115
1962	608.8708040594556
1963	579.0168414325601
1964	582.9756508531983
1965	574.8178081222165
1966	577.1514121803855
1967	570.2529990690091
1968	615.8182647167853
1969	640.1724686757152
1970	670.1360336622386
1971	698.3062003821294
1972	728.0296910190261
1973	766.8030856440536
1974	801.4775469294144
1975	825.3391250646837
1976	862.0387113693124
1977	910.6672881040467
1978	949.8787712058321
1979	993.5164064785469
1980	1067.1720238219577
1981	1124.618193276825
1982	1123.6499883336426
1983	1146.7278171050166
1984	1198.460064002312
1985	1202.3533906917264
1986	1246.5797237723878
1987	1283.9626915856134
1988	1330.9534400935497
1989	1408.5024829650904
1990	1483.6380320313144
1991	1556.8066635196194
1992	1629.8479782466522
1993	1706.9523645880442
1994	1805.6038853342534
1995	1922.35211804745
1996	2039.3629887749155
1997	2101.2541494591624
1998	1797.083921815845
1999	1784.3335946989955
2000	1845.227800727029
2001	1885.679751376955
2002	1943.644927906336
2003	2009.4897839539944
2004	2083.8825089786965
2005	2174.9152214896626
2006	2264.9357333097387
2007	2377.2549929708084
2008	2487.611296607031
2009	2569.8742126127836
2010	2695.8681700721445
2011	2826.480440723476
2012	2959.514478166795
2013	3086.323116952238
2014	3203.4842870207717
2015	3322.581678954442
2016	3453.0494303051064
2017	3591.780028459257
2018	3741.305266820489
2019	3892.4216618736887
2020	3780.121634415854
2021	3892.9559999059934
2022	4073.5583496207314
2023	4247.853155200733