Year	constant 2015 US$
1960	1481.4413162536118
1961	1534.526695233257
1962	1603.24547750409
1963	1630.255218017389
1964	1737.1600565940457
1965	1650.2445281870093
1966	1717.1220496812134
1967	1705.2883941348703
1968	1770.5830453233823
1969	1855.4203837350265
1970	1924.371198135347
1971	2022.9878988928763
1972	2092.354193523196
1973	2145.0408833272677
1974	2224.6515274933927
1975	2240.9686448645434
1976	2346.211835454903
1977	2387.9417093350057
1978	2530.5430092407073
1979	2580.224553071863
1980	2632.657520183571
1981	2647.7065721259182
1982	2626.1146853050222
1983	2578.029612076909
1984	2592.0721558789432
1985	2583.3272012193625
1986	2610.486267552132
1987	2652.1018867890148
1988	2693.7225954862015
1989	2722.695932033822
1990	2746.4704870582386
1991	2733.3486144591366
1992	2760.9982654038677
1993	2872.2349944409866
1994	2983.680108763981
1995	3087.093534565969
1996	3062.880646540257
1997	3081.1364622272267
1998	3003.719061454822
1999	2794.451980356789
2000	2804.463269534359
2001	2803.363946705491
2002	2815.8806500391916
2003	2856.1150193410144
2004	2924.3980185327086
2005	3012.6053445029097
2006	3163.1313141637074
2007	3328.8727094246556
2008	3425.61453168092
2009	3444.9312867652643
2010	3578.4372843958636
2011	3734.2171536897213
2012	3903.7998109217
2013	4044.186908823805
2014	4176.284671940055
2015	4265.070381834566
2016	4286.56093845596
2017	4308.940065294022
2018	4364.86968058797
2019	4460.138244202544
2020	4174.977416141536
2021	4735.231315055382
2022	5205.043410648588
2023	5184.977100313504