Year	constant 2015 US$
1960	2377.55884105386
1961	2429.2503796105616
1962	2476.348711489173
1963	2456.2309965909217
1964	2562.358489084053
1965	2569.8903741171257
1966	2487.3418330532827
1967	2527.465929687303
1968	2501.7939375382402
1969	2543.778123312429
1970	2641.4266811656307
1971	2728.6282953637487
1972	2785.4180291366833
1973	3085.772798680023
1974	3336.96188789538
1975	3601.652106099676
1976	3762.922536455753
1977	3720.2674617809557
1978	3827.5138832820858
1979	3865.305768307765
1980	3903.5343693905834
1981	4015.648641229096
1982	3936.648543247088
1983	3823.799707657168
1984	3825.414201009966
1985	3876.5567699748417
1986	3911.2194337362
1987	3805.1439309918196
1988	3932.122303504305
1989	3878.1584377401878
1990	3928.6584271469496
1991	4006.595845247223
1992	4005.860964346841
1993	4004.69311961486
1994	4096.181616079789
1995	4110.913109220554
1996	4106.263293965183
1997	4207.995951361084
1998	4269.990001995063
1999	3998.0273528157013
2000	3973.03005010677
2001	4069.5576847421416
2002	4196.5741330309465
2003	4242.778644076507
2004	4454.494726184335
2005	4614.708423003133
2006	4732.875736543457
2007	4740.758989135283
2008	4966.619295259502
2009	4937.038397013901
2010	5051.38961980715
2011	5390.584367393069
2012	5611.680474809108
2013	5924.858872647472
2014	6084.307647156554
2015	6002.108311102401
2016	5872.459719533054
2017	6127.1494673010875
2018	6075.166156487737
2019	5970.108945096897
2020	5342.739037515825
2021	5798.36443701443
2022	6087.535279160459
2023	6166.004759035875