Year	constant 2015 US$
1960	11142.857336475527
1961	11905.916327080564
1962	12177.853238294325
1963	12489.298469439282
1964	13070.656932155794
1965	13717.966724926497
1966	13990.933270913521
1967	14217.170700480076
1968	14479.478382380108
1969	15877.747730849867
1970	17128.63074817157
1971	17510.22659920124
1972	18752.779159740916
1973	19948.827440953904
1974	20486.938638616306
1975	20764.33696978557
1976	20773.130910223255
1977	20764.71661893837
1978	21309.71271506325
1979	22769.107273565573
1980	23921.614522336502
1981	24133.242113003995
1982	24744.296777225052
1983	25363.855215195417
1984	26045.513871152598
1985	26857.593638232713
1986	27508.19999358499
1987	28410.875098103672
1988	29806.343329290554
1989	31209.75811405664
1990	31279.95196645907
1991	29278.3636555028
1992	28155.089556648687
1993	27833.702570173307
1994	28812.303619992043
1995	29912.897973915817
1996	30908.300309087947
1997	32768.378128261895
1998	34464.9908824671
1999	35891.0056383953
2000	37884.3913209153
2001	38784.772552258364
2002	39351.39039561831
2003	40044.30485558293
2004	41522.17508412236
2005	42530.61967718767
2006	44074.030920414116
2007	46212.640974121554
2008	46358.62041129709
2009	42412.09784941831
2010	43563.572197436515
2011	44466.81769785724
2012	43637.24867136569
2013	43044.9971201474
2014	42710.92128897293
2015	42801.90811672851
2016	43878.96672735787
2017	45173.629406719876
2018	45627.91989472329
2019	46135.88142426314
2020	44984.73445054872
2021	46165.68655373868
2022	46655.165362426815
2023	45939.291645013545