Year	current US$
1960	1515620000
1961	1698900000
1962	1681100000
1963	1834909000
1964	2037040000
1965	2217077000
1966	2270363000
1967	2303680000
1968	2242126000
1969	2592553000
1970	3245688000
1971	3778462000
1972	3983811000
1973	5214168000
1974	7549332000
1975	11456160000
1976	13804981000
1977	18402937000
1978	20949231000
1979	19354177467.9
1980	10877296430.5
1981	30071341049.699997
1982	23992210946.56
1983	19734399842.57
1984	14541857330.56
1985	15545970884.31
1986	13901031978.21
1987	15212655547.65
1988	15032081019.669998
1989	14913822224.49
1990	21279174210.8
1991	21776779281.34
1992	29389361982.870003
1993	25378626765.41
1994	22948497014.85
1995	26440801131.3
1996	27513525216.300003
1997	26973206852.429996
1998	31646434761.979996
1999	28819487617.770004
2000	24794862911
2001	27535209688
2002	27107367165
2003	37139856450
2004	44802453088
2005	51648650905
2006	57562753705
2007	74056390880
2008	89010701746
2009	80884451230
2010	93443695532
2011	118975030869
2012	115536660903
2013	132587506631
2014	138551419538
2015	115221902210
2016	101018460582
2017	104266691817
2018	113579867696
2019	116765936959
2020	114034930362