Year	current US$
1960	7189630000
1961	8285750000
1962	7581252000
1963	8615149000
1964	9153107000
1965	8585406000
1966	10633219000
1967	12295013000
1968	13385548000
1969	14938070000
1970	21345457000
1971	24208020000
1972	29037023000
1973	40203335000
1974	63306701000
1975	68173878000
1976	74851378000
1977	86136275000
1978	108407160000
1979	137083824000
1980	164087216888.91
1981	172090098736.1
1982	152727926260.17
1983	147013690100.92
1984	149869125829.56
1985	162093024873.19
1986	163572343951.55
1987	175898270461.15997
1988	209224285054.2
1989	235849742633.69998
1990	256079944665.80002
1991	285644394117.1
1992	364833534747.82007
1993	419186656789.2
1994	489637341274.89996
1995	612725005446.1
1996	654111379367.6001
1997	680425944277.4999
1998	639646238401.8999
1999	658794452663.5
2000	760369151627
2001	791761245245
2002	867035840890
2003	1077311155096
2004	1425599311172
2005	1681260409443
2006	2040510953163
2007	2546315072225
2008	3129091746581
2009	2492251823806
2010	3225612600394
2011	3979507452713
2012	4166934375827
2013	4426021014737
2014	4418749349176
2015	3707921771556
2016	3634653689824
2017	4119464931665
2018	4628363920204
2019	4543545014161
2020	4376100951072