Year Per 100,000 People 1981 5.4805 1982 4.158 1985 4.0965 1986 3.2911 1987 4.2958 1988 4.5397 1989 7.6711 1990 4.5874 1991 2.3248 1992 0.3561 1994 0.4006 1995 0.0448 1996 0.6837 1997 3.0046 1998 7.2273 1999 6.2873 2000 5.4183 2001 6.9416 2004 4.9007 2005 2.025 2006 2.2692 2007 1.7834 2009 0.9385 2010 0.4923 2011 0.6147 2012 1.2804 2013 1.3849 2014 2.8752 2015 3.1187