Year	constant 2015 US$
1960	6647634665.420425
1961	6946363346.204106
1962	7425238989.382148
1963	8474514657.590306
1964	9813186186.153357
1965	10634709665.074087
1966	11413255113.784931
1967	12281442694.849607
1968	12945170924.167616
1969	14240864422.520779
1970	15185596816.514013
1971	16150877100.863068
1972	16764176729.040642
1973	18319463804.026512
1974	19507869080.979813
1975	20258416068.40429
1976	20766231297.617817
1977	20070740108.016956
1978	21527052230.220203
1979	23304444745.998775
1980	25211555623.031273
1981	27535427909.79978
1982	26097703001.391685
1983	25628709168.079422
1984	27330341141.553703
1985	26431174870.83044
1986	26387961559.433273
1987	26969811935.5777
1988	28724695884.439777
1989	29261372272.62637
1990	28603761354.17765
1991	27297009640.02231
1992	26401843149.482815
1993	26353763329.06418
1994	27065314937.9921
1995	28824560411.86339
1996	29228104257.80202
1997	30017263068.331547
1998	29957228540.20284
1999	30136971916.933952
2000	32578066639.931213
2001	33620564774.73045
2002	34561940584.56429
2003	34042047077.96113
2004	35708282345.75455
2005	37923684397.65183
2006	40365281108.747574
2007	42525764186.67436
2008	43510262034.49012
2009	38886440805.01953
2010	41183592277.93297
2011	42433110125.72969
2012	43322698813.005035
2013	43763929858.35352
2014	43481553518.108665
2015	43400939046.48372
2016	43596014615.89644
2017	43513895160.31435
2018	44174019948.45127
2019	43865942973.579384
2020	38717934473.478355
2021	41308380345.43556
2022	41156231844.32757
2023	41341721171.94467