Year Total 1985 92000 1986 92000 1987 92000 1988 92000 1989 92000 1990 89000 1991 67000 1992 12000 1993 3000 1994 4000 1995 3000 1996 3000 1997 3000 1998 0 1999 0 2000 0 2001 3000 2002 2000 2003 3000 2004 920 2005 3220 2006 3220 2007 1240.4 2008 6982.3 2009 4121.2 2010 526.07 2011 3471 2012 545.28 2013 2935.3 2014 1658.8 2015 353.87 2016 354.84