Year	constant 2015 US$
1961	3956.028167418526
1962	4333.84026537889
1963	4847.315664996792
1964	5139.790855012673
1965	5739.564345490573
1966	5791.071338419777
1967	5737.087971776156
1968	5807.3578494808535
1969	6363.70995718479
1970	6782.667962618308
1971	7122.0782056192365
1972	7728.27282501246
1973	8435.894200278362
1974	8370.844101478151
1975	8254.019281606354
1976	9468.52440803176
1977	10427.1357072585
1978	11085.832058805872
1979	11709.220898681078
1980	12553.127877725115
1981	13397.33727580933
1982	13580.063462113709
1983	14174.725193822971
1984	15435.992366955272
1985	15386.683427176673
1986	16876.284045293178
1987	18945.743202857968
1988	20386.255912147673
1989	20635.56571477385
1990	21357.280455774344
1991	22388.631925313082
1992	23585.663795898203
1993	24621.660084451007
1994	25526.46889118984
1995	25620.035288186347
1996	25551.409826770774
1997	26631.827576856696
1998	24856.78457019503
1999	25237.66453042103
2000	26933.246359227476
2001	26885.420196383962
2002	27210.06212938306
2003	28097.088492678286
2004	30304.28984339452
2005	32401.347508957875
2006	34457.99800237024
2007	36371.63324186684
2008	36924.058884503036
2009	35938.58490228369
2010	38090.00655154076
2011	39656.326517463414
2012	39887.82405188232
2013	40959.97820515128
2014	41796.843916459104
2015	42432.161974044146
2016	43087.53832159839
2017	44380.793840651284
2018	45280.4738923626
2019	44195.252337854894
2020	41451.28639744305
2021	44530.893831824935
2022	43283.01590196741
2023	43548.253834928