Year	constant 2015 US$
1960	1373.8293352402745
1961	1298.582066470039
1962	1471.2849640477561
1963	1517.5560746859871
1964	1569.9065146287996
1965	1332.614877980087
1966	1467.1367687782156
1967	1471.0094983711194
1968	1432.017947937996
1969	1543.4509381253386
1970	1774.6587319580944
1971	1914.5617662455218
1972	2057.6655922904
1973	2262.498527208787
1974	2336.9206161594857
1975	2396.7248148619806
1976	2495.015886337532
1977	2555.963299289757
1978	2548.74500221006
1979	2602.475377427918
1980	2746.427827693076
1981	2800.9791953545746
1982	2787.120073173523
1983	2853.377510775692
1984	2827.091255243326
1985	2708.5796944513995
1986	2745.5686980108376
1987	2960.829853820378
1988	2962.0453381950824
1989	3027.785430452841
1990	2802.82147927053
1991	2771.2095322502637
1992	3020.359449672554
1993	3179.1314586812596
1994	3199.3591903107076
1995	3318.6050897086166
1996	3454.408698345023
1997	3697.763654541911
1998	3883.1334663420967
1999	4050.5815249428274
2000	4175.1710239488775
2001	4214.573761048237
2002	4340.899935651502
2003	4222.590337288338
2004	4272.075232341411
2005	4612.808748792337
2006	4971.238166016557
2007	5272.864111656545
2008	5373.096253391455
2009	5353.598221580276
2010	5724.307290596676
2011	5827.383252643399
2012	5909.863376401326
2013	6120.991164364701
2014	6472.8490858272535
2015	6838.936745906344
2016	7209.990202144348
2017	7461.653268998162
2018	7894.955192237482
2019	8205.142591610465
2020	7571.782820256122
2021	8410.605843497717
2022	8732.080738847822
2023	8856.068663236065