Year Per 100,000 People 1975 7.1048 1976 5.9996 1977 5.0929 1978 5.0418 1979 4.8624 1980 4.1466 1981 4.0655 1982 4.2244 1983 4.0399 1984 3.7473 1985 3.6908 1986 4.6995 1987 3.6221 1988 4.2469 1989 4.5393 1990 3.7134 1991 3.9621 1992 4.0487 1993 3.6768 1994 4.022 1995 3.4208 1996 2.5051 1997 2.4207 1998 2.5555 1999 2.1409 2000 2.6179 2001 2.1444 2002 2.6727 2003 2.0557 2004 2.5722 2005 3.2412 2006 2.4293 2007 1.6994 2008 1.5289 2009 2.4677 2010 2.2051 2011 2.1675 2012 1.9777 2013 1.9088 2014 2.0335 2015 1.6437