Year	current US$
1992	5800000
1994	15000000
1995	58100000
1996	85700000
1997	92900000
1998	58500000
1999	3400000
2003	80000000
2004	80000000
2009	110000000
2012	273000000
2013	415600000
2014	165000000
2015	143000000
2016	46000000