Year	current US$
1960	566800000
1961	484300000
1962	414000000
1963	521600000
1964	538000000
1965	605200000
1966	605900000
1967	566600000
1968	634710000
1969	744870000
1970	772970000
1971	790050000
1972	825250000
1973	1124650000
1974	1516280000
1975	1403910000
1976	1521710000
1977	1708350000
1978	1737180000
1979	1839660000
1980	3045870000
1981	3232600000
1982	3119970000
1983	3214840000
1984	3139950000
1985	1838139000
1986	2248717000
1987	2037204000
1988	2120446000
1989	2608574000
1990	2585189000
1991	3659377000
1992	3049929000
1993	3109709171
1994	3447019000
1995	3443717428
1996	3533934930
1997	3907984108
1998	3195264066
1999	3535809446
2000	4763651045
2001	4106632539.9999995
2002	4642854669
2003	6080519460
2004	7581208134
2005	10391543947
2006	13363402709
2007	15805549575
2008	25539150688
2009	23528919092
2010	26579111014
2011	30992601095
2012	29239921152
2013	28893851283
2014	26692508624
2015	21119712539
2016	20020899998
2017	23295600004
2018	26030175289
2019	30611734061
2020	26812099568