Year	constant 2015 US$
1960	7265.324563346199
1961	7555.935973790539
1962	7820.301596251081
1963	8108.217090966108
1964	8487.118398402285
1965	8768.888869378154
1966	9016.09543129777
1967	9240.68688975557
1968	9651.657063762626
1969	10137.305764922927
1970	10561.675643541754
1971	10873.452195933087
1972	11288.465445320739
1973	11858.018913900718
1974	12025.415560518566
1975	11842.520806855853
1976	12277.444239626413
1977	12543.901499595237
1978	12847.04289382858
1979	13233.0773708083
1980	13337.396102548346
1981	13317.303247023689
1982	13365.497091599253
1983	13547.61492972038
1984	13823.284469410379
1985	14120.362819309756
1986	14417.951552770164
1987	14769.707450525431
1988	15292.459717247448
1989	15737.997031886567
1990	16018.26327276895
1991	15960.51058701864
1992	15782.753504463668
1993	15604.90102496459
1994	15754.457433248452
1995	16062.672414727309
1996	16316.761359438444
1997	16789.20399063215
1998	17207.03765691769
1999	17682.219599742253
2000	18432.345342085566
2001	18823.772061627373
2002	19087.304230440302
2003	19380.32405942247
2004	19940.16398017656
2005	20411.504331613345
2006	21135.56505458646
2007	21837.713728562303
2008	21969.76437639207
2009	20906.594293336133
2010	21378.697037271726
2011	21826.66548868589
2012	21821.211058458295
2013	21906.836384378523
2014	22225.680496473975
2015	22579.183697863846
2016	22905.150807714104
2017	23479.28032481579
2018	23890.770575643866
2019	24242.040641853553
2020	22863.918080450567
2021	24334.86231988193
2022	25189.9230456369
2023	25351.795196889