Year Per 100,000 People 1981 3.3896 1982 3.81 1985 1.9774 1986 2.2819 1987 2.5426 1988 1.9332 1989 3.4836 1990 3.0877 1991 1.6312 1996 0.3672 1997 1.2603 1998 2.6583 1999 5.1216 2000 3.6256 2001 4.5852 2004 1.6321 2005 1.4247 2006 1.252 2007 2.1068 2009 1.2138 2010 0.2876 2011 0.3226 2012 0.7844 2013 0.9406 2014 3.7846 2015 0.8113