Year	current US$
1960	64200000
1961	67400000
1962	79800000
1963	82800000
1964	95300000
1965	127100000
1966	146100000
1967	155500000
1968	178972000
1969	166345000
1970	168402000
1971	186852000
1972	197558000
1973	248522000
1974	259459000
1975	301582000
1976	395062000
1977	509591000
1978	601235000
1979	731182000
1980	827165000
1981	726162000
1982	663961000
1983	656939000
1984	745494483.7
1985	776361644.3
1986	768837000
1987	791400000
1988	839000000
1989	851000000
1990	812400000
1991	779900000
1992	844366000
1993	861800000
1994	1004957000
1995	1220200000
1996	1320800000
1997	1447000000
1998	1532900000
1999	3690854876
2000	1396398214
2001	1263186412
2002	1239672991
2003	1358545079
2004	1640291277
2005	1885181045
2006	2092429130
2007	2525483928
2008	2832983258
2009	2361931366
2010	2818820780
2011	3959800547
2012	4389870998
2013	3927256706
2014	4066735122
2015	3915390951
2016	3857292668
2017	4520771039
2018	4352250286
2019	2520914892
2020	4213486975