Year Per 100,000 People 1980 29.7398 1981 30.2177 1982 30.7746 1983 29.7545 1984 30.1999 1985 26.2674 1986 22.4527 1987 20.5703 1988 20.6364 1989 22.7427 1990 23.4068 1991 25.4189 1992 31.3118 1993 37.8744 1994 36.3498 1995 36.2008 1996 32.7434 1997 31.4861 1998 30.4375 1999 26.9318 2000 27.7367 2001 25.832 2002 24.8931 2003 22.2647 2004 20.5196 2005 21.0178 2006 18.0134 2007 16.8342 2008 19.8159 2009 19.7553 2010 17.2269 2011 17.0951 2012 17.8033 2013 15.4421 2014 15.9642 2015 15.5052