Year Per 100,000 People 1981 3.4193 1982 2.3193 1985 2.4998 1986 1.8644 1987 2.9809 1988 3.2707 1989 5.6542 1990 2.8201 1991 1.7328 1992 0.3241 1994 0.1719 1996 0.4623 1997 1.8214 1998 6.9918 1999 4.6224 2000 3.3166 2001 4.1613 2004 3.5972 2005 0.9896 2006 2.0178 2007 0.9542 2009 1.0431 2010 0.7452 2011 0.3615 2012 0.9565 2013 0.9183 2014 1.4066 2015 2.1205