Year	constant 2010 US$
1960	23008992658.0504
1961	25235658376.0565
1962	23008992658.0504
1963	18926735034.7049
1964	24307866247.3594
1965	25235658376.0565
1966	24307893445.3649
1967	25235753497.3761
1968	27462467684.2355
1969	33771431798.6955
1970	34524791742.0319
1971	38298983723.64
1972	38688555382.5994
1973	36870176562.6906
1974	37278422735.4792
1975	37946473864.1932
1976	40581244029.0016
1977	49061281138.2987
1978	41249295157.7156
1979	45461492184.2598
1980	49147059727.9609
1981	41786826499.7823
1982	33453328085.3562
1983	33586977172.2211
1984	32198361015.4025
1985	27656874964.3228
1986	30710408756.2928
1987	34683082652.0442
1988	33462331485.5587
1989	26233945822.9305
1990	21813502559.2832
1991	28344831377.56
1992	37597566920.8399
1993	42998056697.0012
1994	48431087938.7159
1995	42311605077.4156
1996	47855799132.8867
1997	55796400321.1563
1998	58530076426.0573
1999	48625810622.0592
2000	46774183457.3503
2001	41192363760.929
2002	25706305306.6221
2003	36038062293.0546
2004	46710160975.2367
2005	53621551265.8523
2006	57303478885.2748
2007	68953310661.1875
2008	73561767542.5991
2009	56589932108.1661
2010	75005496430.9387
2011	87075935906.7979
2012	77336433977.4571
2013	80947291819.5158
2014	75909512355.3215
2015	79368487952.6835
2016	75333400041.9997
2017	87310901175.6265
2018	80131897227.9654