Year	constant 2015 US$
1965	2653.5509050264477
1966	2767.8989749157586
1967	2841.6765233423025
1968	2858.1314937507327
1969	2884.280525423772
1970	2897.824941499617
1971	2937.457992339067
1972	3043.212541102262
1973	3115.2690304604407
1974	3204.561786202645
1975	3223.2486926595047
1976	3312.7522979415526
1977	3462.726781838082
1978	3571.6717649476486
1979	3355.572590098707
1980	2776.5840801913632
1981	2594.6145699944122
1982	2404.1239896664238
1983	2394.3928699673093
1984	2379.4124921377697
1985	2347.6203315040884
1986	2307.694788213835
1987	2320.566623658669
1988	2316.9451346805245
1989	2294.7292855337855
1990	2362.4443010002533
1991	2356.5174382019754
1992	2480.59431455075
1993	2588.1988172646215
1994	2680.1051237368815
1995	2780.048976797138
1996	2778.9457178773123
1997	2843.828830682932
1998	2898.2005060888046
1999	2941.4830515150848
2000	2957.3718668901856
2001	2968.63154164567
2002	3003.698336282384
2003	3042.8346504175497
2004	3065.4187879618203
2005	3146.4703768419986
2006	3284.7721289405085
2007	3340.095412382679
2008	3398.577469453699
2009	3314.298500477269
2010	3373.043810978892
2011	3487.031188205737
2012	3573.7858998242414
2013	3637.4227306024127
2014	3686.095561917827
2015	3761.5136800027476
2016	3845.022492840428
2017	3921.3158627972234
2018	4009.716557124716
2019	4104.917891626878
2020	3773.393673670623
2021	4208.271846366105
2022	4310.910798631582
2023	4442.249659627783