Year	constant 2015 US$
1960	454.70312204666806
1961	459.9072412756695
1962	458.8684044647538
1963	468.1060589973306
1964	485.35904401199207
1965	482.81024476424784
1966	484.94249625186416
1967	491.5442119484737
1968	494.48581914237366
1969	499.75448130293574
1970	508.0112323069044
1971	508.05686975303206
1972	500.17384092062264
1973	490.10229145228584
1974	481.8977391425677
1975	487.1028511096065
1976	494.87580688014947
1977	505.8164803823592
1978	521.4066503912483
1979	505.3420428825585
1980	527.5854831254726
1981	525.9333994928198
1982	521.0317743789243
1983	534.8762438448387
1984	541.2160277709125
1985	543.6504787986429
1986	553.4612518669214
1987	558.8732178786713
1988	578.718601321967
1989	584.9751042998649
1990	595.628710327468
1991	597.9067841376792
1992	610.4046765061145
1993	618.8440784705417
1994	629.0935368009057
1995	648.179539139312
1996	673.7594649686274
1997	681.6968639015436
1998	701.3308615599443
1999	723.8770406623511
2000	734.1912208035412
2001	754.5199996192895
2002	760.0813454032555
2003	783.2186338067565
2004	808.9668971521049
2005	849.2103260291165
2006	876.204748939555
2007	917.5200158135443
2008	943.1467911996936
2009	965.9507205117052
2010	1005.3460344123924
2011	1049.0696138054498
2012	1089.8410588298084
2013	1134.8011848693668
2014	1178.6332361377522
2015	1233.3393016484977
2016	1291.3184973507816
2017	1341.4722775447683
2018	1398.0856677835457
2019	1442.0052019712173
2020	1377.9583474560598
2021	1475.1650326024803
2022	1546.9280386820133
2023	1574.0527658732517