Year	constant 2015 US$
1960	1413.7282523616616
1961	1726.358744389778
1962	1691.5978779691366
1963	1877.0229033703522
1964	1706.124076529394
1965	1721.8098879369477
1966	1626.2215369309647
1967	1664.8105419224223
1968	1521.966988413035
1969	1569.5393686931159
1970	1537.4955791824302
1971	1577.927838318123
1972	1683.8983153347294
1973	1857.8226488961136
1974	1991.0872181903305
1975	1977.689462874702
1976	2408.2722234512153
1977	2524.539547044514
1978	2587.217001993065
1979	2631.9885766180346
1980	2327.601068220267
1981	2428.2646905018187
1982	2530.623339019347
1983	2517.0801990054556
1984	2607.927221135524
1985	2766.590287099526
1986	3012.9893721938506
1987	3256.422836429347
1988	3453.7203508672605
1989	3580.4059504096504
1990	3810.4808330880865
1991	3936.766508518298
1992	4138.346449321136
1993	4297.40909221881
1994	4412.9375663223045
1995	4562.746927757836
1996	4768.683435683273
1997	4977.190167573152
1998	5224.184196508508
1999	5292.869088597679
2000	5671.029550420097
2001	5814.748345700119
2002	5867.773629950492
2003	6170.6487673385145
2004	6397.593461690311
2005	6472.873885547412
2006	6756.229559695167
2007	7110.694938516235
2008	7466.694657716888
2009	7693.764343538743
2010	8011.455172197023
2011	8324.783283379642
2012	8591.96715947096
2013	8859.212183229403
2014	9181.615753625641
2015	9507.871336564236
2016	9868.327166419516
2017	10247.696057775824
2018	10652.483688685887
2019	10956.945022616292
2020	9362.874358968173
2021	9679.121238823529
2022	10570.427525284817
2023	11318.600313996843