Year	current US$
1960	144617107.657847
1961	149377012.459751
1962	159176816.463671
1963	166456670.866583
1964	164636707.265855
1965	192776144.47711
1966	213495730.085398
1967	216652858.326429
1968	200648025.921037
1969	215888635.545422
1970	211568462.73851
1971	285112528.583464
1972	310129740.518962
1973	329549615.525449
1974	380646695.197337
1975	422783051.632322
1976	456297918.948521
1977	535385978.513678
1978	595235273.201375
1979	724078834.61868
1980	865656938.80064
1981	870099408.019658
1982	795641875.888205
1983	836142322.097378
1984	839323616.810528
1985	785469140.829504
1986	828273601.633443
1987	780640150.314665
1988	994807324.405575
1989	1190215655.00997
1990	1345487192.64172
1991	1626026005.06546
1992	1533735187.18952
1993	1819890319.79649
1994	844512602.444943
1995	1109266421.08913
1996	1887393239.0502
1997	2213409980.41863
1998	1351209402.46583
1999	1548167149.4122
2000	1422505872.98762
2001	1380593451.55567
2002	3054192568.65576
2003	2829593690.63807
2004	3148488913.27304
2005	3411808884.03232
2006	3505629633.82311
2007	3358312873.28349
2008	4267192526.90135
2009	4409108971.72071
2010	5221051062.9843
2011	6515626249.15743
2012	5364322138.3668
2013	4280539961.19178
2014	4900447452.05766
2015	5193651007.05396
2016	4790048966.9292
2017	5049802236.28851