Year Per 100,000 People 1968 1.6783 1969 3.6197 1970 1.7061 1978 3.0025 1983 1.1959 1986 1.2959 1988 4.6258 1989 11.5889 1990 1.2131 1991 4.7485 1992 4.7075 1993 7.9778 1994 5.7471 1995 4.6366 1996 2.4696 1997 9.306 1998 8.0675 1999 10.9977 2000 8.015 2001 7.5531 2002 6.1189 2003 4.0778 2004 3.2032 2005 5.6966 2006 9.0727 2007 9.6907 2008 4.9951 2009 14.6811 2010 18.3523 2011 6.0015 2012 11.8326 2013 3.426 2014 10.2847 2015 11.0385