Year	constant 2015 US$
1993	51858000
1994	58222000
1998	28836000
1999	27489000
2000	32973000
2001	50745000
2002	72972000
2003	123641000
2004	129848000
2005	150940000
2006	168180000
2007	162262000
2008	189447000
2009	174070000
2010	188099000
2011	191717000
2012	183200000
2013	173595000
2014	180862000
2015	199000000
2016	256364000