Year	current US$
1960	189556208.875822
1961	201735965.280694
1962	208035839.283214
1963	220635587.288254
1964	211815763.684726
1965	261094778.104438
1966	301553968.920622
1967	299088649.544325
1968	282731309.25237
1969	308652346.093844
1970	333853354.134165
1971	409315200.385125
1972	465568862.275449
1973	488465763.456609
1974	608654303.376129
1975	716022227.367446
1976	726834611.17196
1977	843615018.274449
1978	1119118169.96563
1979	1244828008.32415
1980	1410663711.3656
1981	1309393499.38568
1982	1254760776.88299
1983	1315798518.89683
1984	1184519598.13216
1985	1195858297.9466
1986	1208962441.56682
1987	1210983791.37049
1988	1507164369.65603
1989	1840478383.76517
1990	2062053318.18682
1991	2336545749.6522
1992	2145917076.01365
1993	2403836876.53312
1994	1561306705.27906
1995	1645086517.00832
1996	2487488610.90244
1997	2988919138.66287
1998	1843975415.71862
1999	2047130177.98454
2000	1913172845.87144
2001	1907651836.01049
2002	3851600323.66891
2003	3545814268.92783
2004	3954743780.35903
2005	4431169925.99173
2006	4761334112.42266
2007	4868307967.50152
2008	6207080530.04959
2009	6910893652.12383
2010	7799923356.68202
2011	8582968645.27794
2012	6957911213.70019
2013	5884862732.71694
2014	6383573933.6562
2015	6858405592.16887
2016	6113949381.27172
2017	6758384503.4559