Year	constant 2015 US$
1960	573243000
1961	680161000
1962	704127000
1963	886839000
1964	900224000
1965	1039529000
1966	1120840000
1967	1319451000
1968	1266088000
1969	1409605000
1970	1526469000
1971	1432943000
1972	1650265000
1973	1317846000
1974	1588249000
1975	1945530000
1976	1264922000
1977	1348198000
1978	1774970000
1979	1775329000
1980	1682122000
1981	1476703000
1982	2031042000
1983	1797815000
1984	1796575000
1985	2060353000
1986	2026661000
1987	1509199000
1988	2192320000
1989	1858822000
1990	1680685000
1991	1812932000
1992	1845074000
1993	1853270000
1994	1945855000
1995	2046828000
1996	1706561000
1997	1751619000
1998	1865898000
1999	1831839000
2000	1975280000
2001	1888340000
2002	1974710000
2003	1977032000
2004	2015959000
2005	2144774000
2006	2609154000
2007	2829469000
2008	2983572000
2009	2943675000
2010	3290942000
2011	3645048000
2012	3951681000
2013	3755248000
2014	3629247000
2015	3493610000
2016	3304582000