Year	constant 2015 US$
1960	744.0262160033404
1961	755.1597624491836
1962	808.4240519970144
1963	858.8110712204947
1964	834.9682072624094
1965	867.084595190819
1966	839.1380620754775
1967	816.3426605476129
1968	796.5339210984682
1969	732.1158175862428
1970	734.0142361814457
1971	755.1067383308341
1972	697.3079231923256
1973	563.2207063939435
1974	596.4699826677422
1975	564.2901321492122
1976	552.6778875592067
1977	579.1261939433416
1978	638.4148628640681
1979	663.8426425003094
1980	628.0315772883071
1981	607.9017896663406
1982	602.3685206182602
1983	561.7940320716438
1984	453.41433670352575
1985	473.88350862972635
1986	488.9680610980256
1987	474.773538623254
1988	492.2067127106772
1989	481.9889736478188
1990	461.2155281417834
1991	445.14949110567426
1992	440.13979818644384
1993	427.84576447345853
1994	421.99887053066584
1995	418.24411328061507
1996	404.8044653183932
1997	397.5052338966425
1998	422.6201057516239
1999	407.554434017867
2000	389.07752296939844
2001	403.17662355932305
2002	408.5713581060711
2003	403.06419942966295
2004	390.4248235365214
2005	404.2805689147134
2006	413.0559601919605
2007	410.8033080769035
2008	426.60568041806164
2009	419.17324878655256
2010	438.46388274388187
2011	432.2975623017415
2012	460.03223661756135
2013	466.3336759876103
2014	478.85515386241383
2015	481.1113011050023
2016	489.43381232354045
2017	494.6354942769389
2018	510.5955142677584
2019	520.9346433187939
2020	519.6960777994661
2021	507.7103245112009
2022	547.4201513341767
2023	540.5848243100982