Year Per 100,000 People 1980 50.053 1981 50.298 1982 52.5212 1983 46.921 1984 45.1773 1985 40.2521 1986 31.4739 1987 27.8416 1988 27.3312 1989 34.1078 1990 34.5536 1991 38.2472 1992 40.8868 1993 57.0699 1994 56.6758 1995 53.131 1996 46.8252 1997 44.6041 1998 45.736 1999 40.4253 2000 39.4505 2001 37.8543 2002 35.8752 2003 30.7029 2004 29.1799 2005 28.2924 2006 24.8595 2007 25.7723 2008 28.1011 2009 28.0721 2010 27.1273 2011 21.3524 2012 27.9828 2013 25.8312 2014 23.9431 2015 23.0963