Year	current US$
1965	2562962834.33208
1966	2705190411.91863
1967	2540541034.73722
1968	2681490733.69693
1969	3121131463.80662
1970	3691994568.08479
1971	3656676104.40446
1972	4797891729.29611
1973	6616291193.12514
1974	13082477498.228
1975	11398028849.9273
1976	13761294399.5285
1977	17332375413.1802
1978	15895937260.7346
1979	22747674155.0067
1980	34530755827.0805
1981	29308542476.4513
1982	24072298555.5393
1983	19319945625.8605
1984	19257630976.7193
1985	19510744568.7656
1986	17854476944.5123
1987	23032100794.8786
1988	23264517273.9209
1989	30488689524.4307
1990	31705265706.0442
1991	35312709453.4062
1992	34826933409.0455
1993	28420648745.3341
1994	28922858910.6755
1995	38721723338.2603
1996	42022950412.4472
1997	45507811517.7112
1998	37570331916.5018
1999	39243057781.5699
2000	53794339189.2029
2001	49711456576.8106
2002	51382143064.3482
2003	62921456388.7365
2004	69534639370.1478
2005	86107646627.074
2006	128163435263.808
2007	123988338022.532
2008	165141682906.7
2009	122990087661.443
2010	176092457272.834
2011	234558204135.118
2012	248841107618.97
2013	197043241785.859
2014	207401054356.004
2015	139901209394.164
2016	118553624722.891
2017	137026874741.868