Year	constant 2015 US$
1960	356.08041848168904
1961	359.9442443325492
1962	353.3324237131951
1963	358.93415141638854
1964	375.60659285885043
1965	367.673431708054
1966	364.48237483108556
1967	370.6901276407511
1968	372.1959465222573
1969	377.4990007073812
1970	386.5380355081821
1971	380.14795287986055
1972	367.93764991635345
1973	353.9954950917623
1974	342.11779205351246
1975	346.3256762785166
1976	343.9281647881852
1977	350.8172138407347
1978	368.85099213249646
1979	355.55024477380687
1980	375.6022112123192
1981	378.2187166955259
1982	370.7997320527906
1983	387.3523978794886
1984	391.4979531027176
1985	396.67132265935106
1986	399.58662570314186
1987	403.6531654918723
1988	421.00320865107454
1989	426.6993422017365
1990	437.43174510090716
1991	433.22644086550764
1992	443.57717872273935
1993	450.2674857889736
1994	460.1102882879481
1995	477.55931523279384
1996	499.6082495130909
1997	504.4256760530031
1998	519.3773039758528
1999	540.4339111961351
2000	545.8845708698401
2001	564.3581372760843
2002	566.0163126677738
2003	584.7770696952174
2004	607.4573000313666
2005	646.4057318370371
2006	664.8453377839394
2007	699.8230406896038
2008	716.3741144621326
2009	734.1476316576625
2010	765.1004251562139
2011	804.3761605629413
2012	833.346872785424
2013	874.6179634227641
2014	915.6525413730324
2015	967.2412001668105
2016	1026.7133563443326
2017	1075.8991539707956
2018	1139.9822986590232
2019	1185.6041791118048
2020	1123.5396090777197
2021	1231.4278681780002
2022	1302.0149893574105
2023	1324.2704640850156