Year	constant 2015 US$
1960	1891.8660866485993
1961	1942.3130830564396
1962	1979.0220788212105
1963	1824.5791831184142
1964	1861.8145816189715
1965	1848.687778011216
1966	1819.6121674444767
1967	1621.459265724961
1968	1702.1951056243863
1969	1726.231306388021
1970	1885.8480073895323
1971	1917.6696553215447
1972	2385.657956546395
1973	2098.3248008426735
1974	1894.1543855608243
1975	1734.399807540691
1976	1899.2006220184815
1977	2134.3506039034305
1978	2326.7816336936335
1979	2390.9396076880435
1980	2435.715851878228
1981	2531.3520847340537
1982	2625.674366711562
1983	2665.2496962646533
1984	2824.184376120002
1985	2983.099457024825
1986	3136.5139254924266
1987	3139.4852916912196
1988	3571.58010923469
1989	3613.9147919277366
1990	3758.274977425352
1991	3791.078221877401
1992	4017.127277495871
1993	4173.1780543856585
1994	4109.430285856932
1995	4419.674094494543
1996	4472.052033499505
1997	4629.371281096149
1998	4823.406722692905
1999	4961.524102576697
2000	5050.90915138177
2001	5146.989103948091
2002	5431.075982466414
2003	5812.008113688555
2004	6078.022969634217
2005	6260.690479259715
2006	6735.778942257567
2007	6997.474397224184
2008	7058.142462808874
2009	6991.033044230144
2010	6711.00529437643
2011	6707.442516771404
2012	6824.785992360343
2013	7034.040902888652
2014	7157.823385079394
2015	7386.746638451151
2016	7730.675910729224
2017	7873.442039706017
2018	8144.150820589246
2019	8225.936437095912
2020	7940.454685636465
2021	8023.313980288547
2022	8629.531344076246
2023	9170.749467327605