Year Per 100,000 People 1980 3.4276 1981 4.3261 1982 4.047 1983 4.0037 1984 3.6596 1985 3.3704 1986 2.8436 1987 2.2663 1988 3.2667 1989 4.8954 1990 4.1138 1991 5.1904 1992 7.0799 1993 10.6406 1994 10.5779 1995 8.8653 1996 6.9736 1997 9.5357 1998 6.2027 1999 6.6746 2000 5.5858 2001 6.1024 2002 5.7229 2003 5.2207 2004 5.4907 2005 4.3352 2006 3.9106 2007 2.9495 2008 3.8071 2009 2.0541 2010 2.4186 2011 2.0733 2012 2.2239 2013 2.5432 2014 2.5276 2015 2.5907