Year	current US$
1960	67900000
1961	76200000
1962	76000000
1963	86300000
1964	113900000
1965	131900000
1966	150400000
1967	170900000
1968	170647000
1969	198191000
1970	228322000
1971	212253000
1972	240357000
1973	326487000
1974	620068000
1975	492469000
1976	593658000
1977	662757000
1978	649069000
1979	812376000
1980	990693000
1981	963657000
1982	898536000
1983	786720000
1984	781506000
1985	672505000
1986	640340000
1987	569793000
1988	600301628
1989	826890211
1990	922943660
1991	652013506
1992	797871443
1993	803851799
1994	1122709000
1995	1138842800
1996	1215672768
1997	1272100000
1998	1324876000
1999	1405356000
2000	1474807795
2001	1352877295
2002	1374903563
2003	1676586283
2004	2250367602
2005	2795114164
2006	4088314752
2007	4795409544
2008	6932929449
2009	5399575397
2010	6966051780
2011	9145764501
2012	11814578131
2013	12251725324
2014	12899078405
2015	8737107656
2016	7126324175
2017	8223138290.999999
2018	9014703218
2019	8795941803
2020	6897903521