Year	constant 2015 US$
1993	389190000
1994	410580000
1995	498330000
1996	457190000
1997	657410000
1998	686540000
1999	729310000
2000	707140000
2001	631760000
2002	708440000
2003	760920000
2004	679480000
2005	720380000
2006	750590000
2007	778570000
2008	1052150000
2009	1074810000
2010	1037560000
2011	1304950000
2012	1041230000
2013	1200610000
2014	1014420000
2015	1426330000
2016	1180280000
2017	994440000