Year	constant 2015 US$
1960	17774290695.00962
1961	15350523248.67571
1962	3837630786.6301894
1963	9089125497.234903
1964	7675261625.687912
1965	7069320002.16594
1966	6697250945.11155
1967	6484639282.518128
1968	7707153401.369445
1969	9301737214.505919
1970	10471098710.841808
1971	9673806804.273558
1972	11268389502.143621
1973	14138640058.784542
1974	19081848203.22163
1975	22217863102.686592
1976	21207960646.203693
1977	25672793848.62467
1978	27692600991.448185
1979	25353877998.776497
1980	26204322530.897774
1981	30475625599.387207
1982	29957540795.877136
1983	31814909474.18781
1984	32610281129.190254
1985	34469067125.113846
1986	26885873402.20181
1987	19169626037.216766
1988	19821393703.205013
1989	23151389364.751965
1990	20882552504.75857
1991	17144575319.762045
1992	17933226127.248184
1993	16731699597.18882
1994	17752333172.098232
1995	18107380847.166615
1996	15699098244.094746
1997	16075877063.135315
1998	17249416475.294895
1999	17541966593.967323
2000	19155896012.126427
2001	20611744108.94456
2002	24692869442.515575
2003	25976898653.526398
2004	29016195795.988956
2005	30844216131.13628
2006	30227331808.513542
2007	33461656312.02451
2008	38380519789.892075
2009	42448854887.62066
2010	44698644196.66457
2011	42463711986.83128
2012	48196313105.05351
2013	52919551789.348816
2014	57311874587.864716
2015	61266393934.42737
2016	59428402116.39458
2017	55090128761.89776
2018	52886523611.42188
2019	49131580435.01091
2020	41270527565.409164
2021	39413353824.96575
2022	39334527117.31582
2023	46965425378.07511