Year	constant 2015 US$
1960	1057.1798690201206
1961	1050.122173028617
1962	1119.9708231095974
1963	1136.4295025165372
1964	1201.6841085584076
1965	1252.1184164471053
1966	1301.4027419319762
1967	1382.6129118026683
1968	1493.3915074228537
1969	1616.0278218604672
1970	1747.7408009853339
1971	1877.9483208846016
1972	1946.569441673478
1973	2085.952790682918
1974	2204.2571118219407
1975	2291.4514165899895
1976	2444.818018999981
1977	2540.6671468602517
1978	2715.824799258798
1979	2908.537914783919
1980	2863.4610922864954
1981	2971.880667054331
1982	3146.9322101123016
1983	3387.874228361421
1984	3604.156029218824
1985	3829.5440484338774
1986	4145.75126114533
1987	4457.813814859903
1988	4828.527182097294
1989	5298.154844549123
1990	5773.640061477093
1991	6234.598216825344
1992	6600.260280039327
1993	6987.479995820498
1994	7554.238031184644
1995	8280.651086226108
1996	8837.273722463535
1997	9124.396586617948
1998	7978.755754739805
1999	8876.66022951083
2000	9623.1880799243
2001	10102.850396509895
2002	10946.361261605956
2003	10848.551412232164
2004	10848.800291503145
2005	11329.902460214924
2006	11825.258428979849
2007	12387.327419705236
2008	12493.17559392522
2009	12456.152627807434
2010	12938.531346442298
2011	13217.847490201133
2012	13366.049391306899
2013	13536.340299320791
2014	13719.836649249586
2015	13949.314127126989
2016	14254.252774543811
2017	14608.714862589184
2018	15008.127242878181
2019	15271.959522199586
2020	14515.423644420349
2021	15054.022487625793
2022	15705.146010682762
2023	15975.281460139004