Year Per 100,000 People 1981 51.5531 1982 45.9423 1985 34.5281 1986 42.5718 1987 41.9735 1988 38.9153 1989 38.3532 1990 42.3547 1991 42.9738 1992 46.3898 1993 45.2701 1994 49.2735 1995 47.9386 1996 44.8872 1997 44.7094 1998 43.8716 1999 47.705 2000 34.2542 2001 34.4277 2002 32.0967 2003 30.7414 2004 27.8655 2005 23.4539 2006 28.7861 2007 26.2951 2008 20.1968 2009 27.2724 2010 21.3211 2011 22.47 2012 25.3076 2013 26.688 2014 23.8686 2015 20.4208