Year Per 100,000 People 1975 8.3902 1976 8.0789 1977 7.2232 1978 6.2279 1979 7.4215 1980 6.5534 1981 5.7664 1982 5.6612 1983 6.4765 1984 5.9159 1985 5.9484 1986 6.9928 1987 6.6653 1988 7.5065 1989 8.2178 1990 6.9955 1991 7.6904 1992 7.7805 1993 7.291 1994 7.9712 1995 6.6071 1996 5.3848 1997 6.4584 1998 5.3729 1999 6.0807 2000 6.2644 2001 6.1543 2002 5.8937 2003 6.3616 2004 6.0884 2005 6.0876 2006 5.2893 2007 4.5876 2008 4.7714 2009 5.4376 2010 6.3099 2011 5.1807 2012 5.4413 2013 4.5743 2014 4.6588 2015 4.0672