Year	current US$
1960	63100000
1961	83800000
1962	85801000
1963	96600000
1964	105500000
1965	107300000
1966	111700000
1967	127300000
1968	153100000
1969	141108000
1970	121629000
1971	159427000
1972	174435000
1973	224545000
1974	298177000
1975	198011000
1977	128991000.00000001
1981	315780909.09999996
1982	277745329.7
1983	224469028.1
1984	124851513.4
1985	136240694
1986	117666953.89999999
1987	226004280.1
1988	317592455.9
1989	219072002.3
1990	381426563.5
1991	153077140.1
1992	134174238
1993	131260341.00000001
1994	161190163.89999998
1995	174295000
1996	226082000
1997	223163996.9
1998	244700000
1999	271000000
2000	364317777
2001	703824842
2002	682126980
2003	1044561723
2004	1504590499
2005	1745620802
2006	2381383187
2007	2410631264
2008	2651189708
2009	2146011215
2010	2208108508
2011	3607128063
2012	3464039075
2013	4045713354
2014	4670093369
2015	3244392700
2016	3334649935
2017	4705380397
2018	5197181113
2019	4728177892
2020	3487268313