Year	constant 2015 US$
1960	449803000
1961	669772000
1962	746859000
1963	414509000
1964	496482000
1965	662799000
1966	849650000
1967	983110000
1968	1031996000
1969	1117907000
1970	1442065000
1971	1419453000
1972	1690492000
1973	1418097000
1974	1691773000
1975	2015632000
1976	2315430000
1977	2510459000
1978	2485912000
1979	3036434000
1980	3157731000
1981	3483478000
1982	3447349000
1983	2930363000
1984	3446591000
1985	3140752000
1986	3544555000
1987	3552045000
1988	3644265000
1989	3619786000
1990	3709772000
1991	3663090000
1992	3676972000
1993	3506762000
1994	3354569000
1995	3716269000
1996	3872764000
1997	3967982000
1998	4080161000
1999	4318039000
2000	4820693000
2001	4819318000
2002	4649941000
2003	4519143000
2004	4286745000
2005	5114752000
2006	5267606000
2007	5400674000
2008	5619006000
2009	5327265000
2010	5492854000
2011	5213875000
2012	4841419000
2013	4552005000
2014	4663255000
2015	5725510000
2016	4953910000