Year Per 100,000 People 1981 27.1201 1982 28.0962 1985 23.2361 1986 17.6228 1987 18.0144 1988 17.9489 1989 20.0521 1990 21.6435 1991 22.5837 1992 16.55 1993 22.0157 1994 22.8439 1995 22.0591 1996 16.4867 1997 15.3612 1998 16.8914 1999 18.8564 2000 15.8841 2001 16.4271 2002 17.3928 2003 14.9198 2004 14.8678 2005 14.7819 2006 13.7752 2007 12.3588 2008 14.0424 2009 15.1823 2010 13.9185 2011 14.8128 2012 16.0567 2013 12.1402 2014 13.1499 2015 12.4837