Year	constant 2015 US$
1960	19209.41498754418
1961	20252.96514180681
1962	20656.251402616013
1963	21276.61219749435
1964	22174.356231972128
1965	23165.631536017252
1966	23851.612578020435
1967	25132.662560708803
1968	25485.494898646553
1969	26417.408178272468
1970	26735.830409521586
1971	28055.276167179367
1972	29325.648785357353
1973	30441.276381107178
1974	31439.59699620518
1975	32814.91570976872
1976	34564.068687691186
1977	35850.33486494938
1978	37095.613864406056
1979	38585.98736126689
1980	40217.74817340802
1981	40720.21481049051
1982	40666.405119500785
1983	42142.336657134176
1984	44567.00468076541
1985	46901.32428989553
1986	48623.38468737134
1987	49244.963198173275
1988	48855.811406180495
1989	49159.70361548948
1990	49937.45577602774
1991	51233.036113879694
1992	52758.945245629584
1993	53938.0213173081
1994	56343.01054134154
1995	58380.540019804575
1996	61005.880043864694
1997	63882.47650076257
1998	65197.94631493908
1999	66094.73546172686
2000	67846.5968530147
2001	68899.52690420154
2002	69472.98367230661
2003	69719.31226816305
2004	72090.98629195783
2005	73524.2549173583
2006	74729.73660631992
2007	76115.70667209825
2008	75535.21178920077
2009	73141.30734229668
2010	72804.39561953415
2011	72660.67540852136
2012	73661.67859180094
2013	73515.91448859576
2014	74180.32386567701
2015	74809.96580498976
2016	75017.49447370552
2017	76247.41165568815
2018	76373.62411452967
2019	76712.28712583733
2020	75287.20595308968
2021	77812.7115682103
2022	79434.62564515752
2023	78939.40476723705