Year	constant 2015 US$
1974	31068000
1975	34383000
1976	38783000
1977	35680000
1978	87699000
1979	83601000
1980	74426000
1981	75181000
1982	122712000
1983	89249000
1984	101583000
1985	112272000
1986	132293000
1987	95922000
1988	100012000
1989	87623000
1990	88959000
1991	113586000
1992	101512000
1993	129354000
1994	167303000
1995	213214000
1996	248528000
1997	265387000
1998	279920000
1999	349394000
2000	362240000
2001	430235000
2002	537404000
2003	549556000
2004	600042000
2005	689005000
2006	943900000
2007	982988000
2008	1044341000
2009	864548000
2010	838021000
2011	786299000
2012	733268000
2013	732662000
2014	715593000
2015	718320000
2016	803927000