Year	constant 2015 US$
1960	734.2926196089812
1961	708.2477534847528
1962	631.6144703210654
1963	559.9291880330937
1964	554.8558708579819
1965	541.2506806528066
1966	482.81053675839496
1967	448.4343869721447
1968	494.1619696901716
1969	538.4995122590022
1970	549.8413821811358
1971	526.9771274122701
1972	506.7794778267675
1973	482.12016034399375
1974	451.2408780291866
1975	445.94203754559885
1976	513.8090536694588
1977	436.9390512524839
1978	480.5435636473
1979	414.8569094284325
1980	487.2534636017038
1981	569.2040822421835
1982	819.8534646791393
1983	665.9401045149326
1984	696.0178337034563
1985	701.2050510220454
1986	634.3204353777176
1987	624.0095299765462
1988	608.2488511446126
1989	593.3980162268142
1990	538.4367288489619
1991	604.17441152505
1992	455.42743461870964
1993	503.85890000940066
1994	584.1285701870383
1995	675.4124309156283
1996	751.6842783769554
1997	727.8582691434158
1998	400.37365236405327
1999	750.4594986448678
2000	704.1017311254567
2001	830.866279729745
2002	600.0273548447274
2003	651.2238681897405
2004	676.2273516993087
2005	757.1451457415872
2006	777.2310653808003
2007	805.5751329944922
2008	849.7432584320219
2009	835.945791706392
2010	814.424232171937
2011	834.1574154572975
2012	828.2193793506607
2013	808.219912974797
2014	871.1163966970877
2015	970.3024804300594
2016	947.5688928413757
2017	693.5524962550573
2018	719.7593763457159
2019	802.195212555559
2020	719.2322821483352
2021	783.5804188900528
2022	804.208396776755
2023	824.7682973980802