Year	constant 2015 US$
1960	71289000
1961	154641000
1962	90738000
1963	109435000
1964	154113000
1965	190805000
1966	200411000
1967	191852000
1968	345868000
1969	415916000
1970	400756000
1971	329493000
1972	636419000
1973	491651000
1974	448630000
1975	554877000
1976	567304000
1977	576515000
1978	602966000
1979	674368000
1980	786134000
1981	818990000
1982	837114000
1983	1072868000
1984	1033272000
1985	1119276000
1986	1108122000
1987	1165396000
1988	1255488000
1989	1226315000
1990	1338754000
1991	1508824000
1992	1912336000
1993	1367476000
1994	1548355000
1995	1466903000
1996	1449558000
1997	1511738000
1998	1492239000
1999	1692106000
2000	1696949000
2001	1712390000
2002	1639100000
2003	1941634000
2004	2126336000
2005	2426153000
2006	2225359000
2007	2131527000
2008	2314482000
2009	2579614000
2010	2464003000
2011	2775489000
2012	2941223000
2013	3047276000
2014	3330960000
2015	3529330000
2016	3699173000