Year	current US$
1960	84800000
1961	68800000
1962	61306000
1963	43179000
1964	1982000
1965	1417000
1966	1197000
1967	263000
1968	179000
1969	157000
1970	192000
1971	1572000
1972	2168000
1973	12211000
1981	141419265.8
1982	179055454.5
1983	204552611.6
1984	249971491.2
1985	692700000
1986	789054000
1987	854199000
1988	1038434000
1989	2472204000
1990	2524639000
1991	2188867000
1992	2917680000
1993	2985159000
1994	4054266000
1995	5619946000
1996	7461479000
1997	9484342000
1998	9306984000
1999	11541366000
2000	14482223983
2001	15031817464
2002	16710109696
2003	20156064492
2004	26524592976
2005	32537122929
2006	39892690296
2007	48623793411
2008	62790933518
2009	57515556403
2010	70248864097
2011	93386148917
2012	111291000000
2013	128743000000
2014	145921000000
2015	160261000000
2016	175940000000
2017	213547000000
2018	238866000000
2019	259384000000
2020	279044000000