Year	constant 2015 US$
1960	914806000
1961	825472000
1962	614279000
1963	682144000
1964	581735000
1965	785976000
1966	567702000
1967	639849000
1968	621183000
1969	790737000
1970	770721000
1971	872358000
1972	982043000
1973	986820000
1974	1013609000
1975	1187287000
1976	1043151000
1977	982786000
1978	1195287000
1979	1276106000
1980	1132250000
1981	1320616000
1982	1312477000
1983	1334883000
1984	1331767000
1985	1292115000
1986	1173200000
1987	1212329000
1988	1021410000
1989	1222640000
1990	1275565000
1991	1184224000
1992	1128001000
1993	1085681000
1994	924692000
1995	1144618000
1996	1057014000
1997	1011367000
1998	1165872000
1999	1040917000
2000	1272530000
2001	1357129000
2002	1567049000
2003	2217257000
2004	1561050000
2005	2049934000
2006	1997559000
2007	1770819000
2008	2016029000
2009	2265796000
2010	2690231000
2011	2347972000
2012	2051755000
2013	1950321000
2014	2062890000
2015	1904190000
2016	2271775000