Year	current US$
1992	10000
1993	6110000
1994	1030000
1995	1940000
1998	790000
1999	460000
2000	370000
2001	890000
2002	430000
2003	780000
2004	10700000
2005	32030000
2006	79950000
2007	100830000
2008	194540000
2009	136680000
2010	159040000
2011	280150000
2012	341690000
2013	287720000
2014	211860000
2015	456240000
2016	153290000