Year per 1,000 people 1980 12.0548000335693 1981 12.0820999145508 1982 12.0510997772217 1983 12.0797996520996 1984 12.143500328064 1985 12.2204999923706 1986 12.4355001449585 1987 12.6675996780396 1988 12.7636995315552 1989 12.727499961853 1990 13.1478004456 1991 13.1162004471 1992 12.7903003693 1993 12.4827003479 1994 12.2215003967 1995 12.2100000381 1996 12.1300001144 1997 11.6199998856 1998 11.2299995422 1999 8.1899995804 2000 7.08 2001 6.9 2002 6.75 2003 6.67 2004 6.41 2005 6.39 2006 6.27 2007 6.12 2008 6.11 2009 6.15 2010 6.18 2011 6.19 2012 6.23 2013 5.83 2014 5.66