Year	current US$
1960	172756544.869103
1961	179476410.471791
1962	192776144.47711
1963	201875962.48075
1964	196836063.278734
1965	229035419.291614
1966	256194876.102478
1967	262634631.317316
1968	243249729.9892
1969	259810392.415697
1970	259090363.614545
1971	339270670.357444
1972	366516966.067864
1973	388990601.733187
1974	458749405.611032
1975	509261403.10257
1976	550821467.688937
1977	644589655.554325
1978	754296550.90672
1979	924837801.444485
1980	1104420637.85248
1981	1091254328.15816
1982	1002179062.0559
1983	1036942543.41164
1984	1028937314.27763
1985	985573846.780292
1986	1061361560.36752
1987	1006655453.43415
1988	1211611330.18389
1989	1449972857.4017
1990	1628714793.50654
1991	1890642706.80983
1992	1787190325.53493
1993	2089695875.35205
1994	1217423641.31679
1995	1402038688.27574
1996	2206303569.91214
1997	2680015525.23078
1998	1608258854.23539
1999	1786957516.88097
2000	1676671440.18353
2001	1651952480.2174
2002	3421497550.31408
2003	3131157420.01693
2004	3476617890.82228
2005	3806201170.92498
2006	3961168687.66703
2007	3845668043.03884
2008	4971056193.76798
2009	5396365191.13192
2010	6211508214.34718
2011	7588489640.32316
2012	6231514260.99733
2013	5183829218.84386
2014	5658709619.39374
2015	6079495479.8363
2016	5528252450.74895
2017	5911712417.76186