Year	constant 2010 US$
1960	3676733642.10252
1961	3753551488.66047
1962	3962959042.97599
1963	4232346168.42418
1964	4399803030.18928
1965	4615984798.22048
1966	4946978126.99362
1967	5259489594.76929
1968	5708094766.25371
1969	5963480481.85532
1970	6275431893.23715
1971	6593178122.71294
1972	7118488614.69433
1973	7527030174.28887
1974	7748292330.78603
1975	8314771356.62179
1976	8698462092.14427
1977	9130881401.37437
1978	9318310508.23123
1979	9330735920.26726
1980	9202739205.92012
1981	9228103797.76153
1982	8864632688.12718
1983	8506313732.94432
1984	8489243603.23777
1985	8346931014.88803
1986	8132091480.78708
1987	8332423696.09193
1988	8574855959.99054
1989	8899854152.23731
1990	9312432337.00174
1991	9802874144.35443
1992	9964278166.45114
1993	10389682466.0544
1994	10874597044.0412
1995	11383340336.3661
1996	11879806859.9085
1997	12468357290.0133
1998	13095434908.7955
1999	13151337955.4457
2000	13481148202.0608
2001	13708143902.0779
2002	14048868708.0998
2003	14429781404.2691
2004	15031978651.7184
2005	15696607781.9891
2006	16449575496.8069
2007	17200397083.6177
2008	18257963015.8351
2009	18870883064.1337
2010	19649631450.6819
2011	20672217124.522
2012	21731104864.155
2013	23207953294.4786
2014	24475239169.1195
2015	25664047552.5822
2016	26758341881.7252
2017	27880910346.8608
2018	29058495427.5788